N-Q 1 ohiofinal.htm NQ FORM FOR OHIO

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF
REGISTERED MANAGEMENT COMPANY


Investment Company Act file number: 811-6083

Name of Registrant: Vanguard Ohio Tax-Free Funds

Address of Registrant: P.O. Box 2600
Valley Forge, PA 19482

Name and address of agent for service: Heidi Stam, Esquire
P.O. Box 876
Valley Forge, PA 19482

Registrant’s telephone number, including area code: (610) 669-1000


Date of fiscal year end: November 30

Date of reporting period: August 31, 2006

Item 1: Schedule of Investments



Vanguard Ohio Tax-Exempt Money Market Fund
Schedule of Investments
August 31, 2006
Coupon Maturity
Date		 Face
Amount
($000)		 Market
Value
($000)
   Municipal Bonds (98.2%)        
  Akron OH Bath & Copley Joint Township Hosp. Dist.
  Rev. (Summa Health Systems) VRDO 3.420% 9/7/06 LOC  10,500  10,500 
1  Akron OH Income Tax Rev. (Community Learning
  Center) TOB VRDO 3.450% 9/7/06 (3)  4,355  4,355 
  Anderson Township OH BAN 4.750% 6/14/07  7,000  7,053 
  Butler County OH BAN 4.000% 9/21/06  4,500  4,503 
  Butler County OH BAN 4.500% 9/21/06  4,000  4,002 
1Butler County OH Waterworks Rev. TOB PUT 3.450% 9/7/06 (2)  2,550  2,550 
1Cincinnati OH City School Dist. GO TOB VRDO 3.450% 9/7/06 (4)  7,600  7,600 
1Cincinnati OH City School Dist. GO TOB VRDO 3.460% 9/7/06 (4)  8,000  8,000 
1Cincinnati OH Water System Rev. TOB VRDO 3.450% 9/7/06  2,000  2,000 
1Cleveland OH Airport System Rev. TOB VRDO 3.490% 9/7/06 (4)  1,500  1,500 
  Cleveland OH Airport System Rev. VRDO 3.430% 9/7/06 (4)  2,500  2,500 
1Cleveland OH GO TOB VRDO 3.440% 9/7/06 (3)  3,035  3,035 
  Cleveland OH State Univ. Rev. VRDO 3.400% 9/7/06 (3)  14,200  14,200 
  Cleveland OH Water Works Rev. VRDO 3.400% 9/7/06 (4)  2,500  2,500 
  Cleveland-Cuyahoga County OH Port Auth. Rev.
  (Museum of Art) VRDO 3.400% 9/7/06  5,000  5,000 
  Cleveland-Cuyahoga County OH Port Auth. Rev.
  (Museum of Art) VRDO 3.410% 9/7/06  10,000  10,000 
  Clinton County OH Hosp. Rev. (Memorial Hosp.)
  VRDO 3.410% 9/7/06 LOC  5,915  5,915 
  Clinton County OH Hosp. Rev. (Memorial Hosp.)
  VRDO 3.580% 9/7/06 LOC  23,000  23,000 
1 Columbus OH City School Dist. School Fac.
1 Construction & Improvement GO TOB VRDO 3.440% 9/7/06 (4)  2,745  2,745 
1 Columbus OH City School Dist. School Fac.
1 Construction & Improvement GO TOB VRDO 3.450% 9/7/06 (4)  8,210  8,210 
  Columbus OH GO VRDO 3.370% 9/7/06  5,000  5,000 
  Columbus OH Sewer VRDO 3.410% 9/7/06  7,700  7,700 
  Cuyahoga County OH Hosp. Rev. (Cleveland Clinic
  Foundation) VRDO 3.660% 9/1/06  3,900  3,900 
  Delaware City OH BAN 4.750% 5/10/07  4,570  4,602 
  Delaware County OH BAN 4.750% 6/13/07  3,600  3,629 
  Delaware County OH Port Auth. Econ. Dev. Rev.
  (Columbus Zoological Park) VRDO 3.460% 9/7/06 LOC  5,850  5,850 
  Delaware County OH Port Auth. Econ. Dev. Rev.
  (Columbus Zoological Park) VRDO 3.460% 9/7/06 LOC  5,850  5,850 
  Franklin County OH Health Care Fac. Rev.
  (Improvement Presbyterian) VRDO 3.420% 9/7/06 LOC  3,905  3,905 
  Franklin County OH Hosp. Rev. (Children's
  Hosp.) VRDO 3.420% 9/7/06 (3)  11,855  11,855 
1 Franklin County OH Hosp. Rev. (Doctors OhioHealth)
  TOB VRDO 3.450% 9/7/06  34,380  34,380 
  Franklin County OH Hosp. Rev. (OhioHealth Corp.)
  VRDO 3.390% 9/7/06 (2)  13,000  13,000 
  Franklin County OH Hosp. Rev. (OhioHealth Corp.)
  VRDO 3.400% 9/7/06 LOC  7,600  7,600 
  Franklin County OH Hosp. Rev. (Trinity Health Credit
   Group) VRDO 3.400% 9/7/06 (3)  5,100  5,100 
  Green City OH BAN 4.750% 7/17/07  7,480  7,540 
  Grove City OH BAN 4.500% 12/6/06  7,723  7,746 
  Grove City OH Street Infrastructure Construction &
  Improvement Notes 4.500% 12/6/06  8,327  8,349 
  Hamilton County OH Hosp. Fac. Rev. (Health Alliance
  of Greater Cincinnati) VRDO 3.350% 9/7/06 (1)  3,725  3,725 
1 Hamilton County OH Sewer System Rev. TOB PUT 3.450% 9/7/06 (1)  5,480  5,480 
1 Hilliard OH School Dist. TOB PUT 3.450% 9/7/06 (1)  8,595  8,595 
  Huron County OH Hosp. Fac. Rev. (Fisher-Titus
  Medical Center) VRDO 3.430% 9/7/06 LOC  10,000  10,000 
  Independence OH BAN 4.500% 5/7/07  4,500  4,524 
  Kent OH BAN 4.000% 10/19/06  3,000  3,004 
  Kent State Univ. Ohio VRDO 3.410% 9/7/06 (1)  6,300  6,300 
  Lakewood OH BAN 4.500% 10/12/06  2,050  2,052 
1 Lakota OH Local School Dist. TOB VRDO 3.440% 9/7/06 (3)  16,510  16,510 
  Lebanon OH BAN 4.000% 9/19/06  4,500  4,502 
1 Licking County OH Joint Vocational School Dist.
1 TOB VRDO 3.440% 9/7/06 (1)  2,085  2,085 
1 Lorain County OH Hosp. Fac. Rev. (Catholic Healthcare Partners) TOB VRDO 3.460% 9/7/06  4,995  4,995 
1 Marysville OH Exempt Village School Dist. TOB VRDO 3.440% 9/7/06 (1)  5,395  5,395 
1 Marysville OH Exempt Village School Dist. TOB VRDO 3.440% 9/7/06 (1)  4,890  4,890 
  Marysville OH WasteWater Treatment System Rev.
  BAN 4.500% 12/21/06  10,000  10,033 
  Mason OH BAN 4.750% 5/24/07  1,900  1,914 
  Mason OH BAN 4.750% 6/28/07  2,350  2,370 
  Mason OH BAN 4.750% 7/5/07  2,250  2,267 
  Mason OH City School Dist. BAN 4.500% 2/8/07  4,450  4,473 
  Montgomery County OH Rev. (Catholic Health
  Initiatives) VRDO 3.410% 9/7/06  20,100  20,100 
  Montgomery County OH Rev. (Catholic Health
  Initiatives) VRDO 3.410% 9/7/06  7,500  7,500 
  Montgomery County OH Rev. (Catholic Health
  Initiatives) VRDO 3.460% 9/7/06  13,435  13,435 
  Ohio Air Quality Dev. Auth. PCR (Ohio Edison Co.)
  VRDO 3.430% 9/1/06 LOC  3,980  3,980 
1 Ohio Building Auth. Rev. (Administration Building
1 Fund) TOB VRDO 3.450% 9/7/06 (4)  3,205  3,205 
  Ohio Building Auth. Rev. (State Correctional Fac.) 5.750% 4/1/07 (2)(Prere.)  5,375  5,490 
  Ohio Building Auth. Rev. (State Correctional Fac.) 5.750% 4/1/07 (2)(Prere.)  5,485  5,603 
1 Ohio Common Schools GO TOB VRDO 3.440% 9/7/06  11,135  11,135 
1 Ohio GO TOB VRDO 3.440% 9/7/06 (2)  7,525  7,525 
1 Ohio GO TOB VRDO 3.450% 9/7/06 (4)  2,955  2,955 
1 Ohio GO TOB VRDO 3.450% 9/7/06  4,115  4,115 
  Ohio Higher Educ. Capital Fac. Rev 4.000% 2/1/07  4,000  4,004 
1 Ohio Higher Educ. Capital Fac. Rev. TOB VRDO 3.450% 9/7/06  5,200  5,200 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) CP 3.500% 11/7/06  15,000  15,000 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) VRDO 3.400% 9/1/06  3,250  3,250 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) VRDO 3.450% 9/7/06  5,000  5,000 
  Ohio Higher Educ. Fac. Comm. Rev. (College Mount
  St. Joseph) VRDO 3.440% 9/7/06 LOC  19,700  19,700 
  Ohio Higher Educ. Fac. Comm. Rev. (Kenyon College)
  VRDO 3.480% 9/7/06  17,300  17,300 
  Ohio Higher Educ. Fac. Comm. Rev. (Mount Union
  College) VRDO 3.430% 9/7/06 LOC  1,365  1,365 
  Ohio Higher Educ. Fac. Comm. Rev. (Oberlin
  College Project) VRDO 3.450% 9/7/06  5,000  5,000 
  Ohio Higher Educ. Fac. Comm. Rev. (Oberlin
  College Project) VRDO 3.450% 9/7/06  975  975 
  Ohio Higher Educ. Fac. Comm. Rev.
  (Pooled Financing) VRDO 3.450% 9/7/06 LOC  11,090  11,090 
1 Ohio Higher Educ. Fac. Comm. Rev. (Univ. of Dayton)
  TOB VRDO 3.440% 9/7/06 (2)  5,840  5,840 
  Ohio Higher Educ. Fac. Comm. Rev. (Xavier Univ.) 5.375% 5/15/07 (1)(Prere.)  6,250  6,445 
  Ohio Higher Educ. Fac. Comm. Rev. (Xavier Univ.) 6.000% 5/15/07 (1)(Prere.)  2,000  2,071 
  Ohio Higher Educ. Fac. Comm. Rev.
  (Xavier Univ.) VRDO 3.370% 9/7/06 LOC  1,800  1,800 
1 Ohio Higher Educ. GO TOB VRDO 3.460% 9/7/06  17,570  17,570 
1 Ohio Higher Educ. GO TOB VRDO 3.460% 9/7/06  10,705  10,705 
1 Ohio Housing Finance Agency Mortgage Rev.
  TOB VRDO 3.500% 9/7/06  4,590  4,590 
1 Ohio Housing Finance Agency Mortgage Rev.
  TOB VRDO 3.480% 9/7/06  7,620  7,620 
1 Ohio Housing Finance Agency Mortgage Rev.
  TOB VRDO 3.480% 9/7/06  4,060  4,060 
1 Ohio Housing Finance Agency Mortgage Rev.
  TOB VRDO 3.480% 9/7/06  2,285  2,285 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.450% 9/7/06  7,115  7,115 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.450% 9/7/06  6,400  6,400 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.450% 9/7/06  5,000  5,000 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.450% 9/7/06  10,000  10,000 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.470% 9/7/06  8,580  8,580 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.470% 9/7/06  2,000  2,000 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.480% 9/7/06  5,315  5,315 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.490% 9/7/06  9,430  9,430 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.490% 9/7/06  1,130  1,130 
  Ohio Housing Finance Agency Mortgage Rev. VRDO 3.490% 9/7/06  8,000  8,000 
1 Ohio Housing Finance Agency Mortgage Rev. VRDO 3.480% 9/7/06  5,285  5,285 
1 Ohio Housing Finance Agency Rev. TOB VRDO 3.520% 9/7/06  4,000  4,000 
1 Ohio Infrastructure Improvement GO TOB VRDO 3.450% 9/7/06  7,265  7,265 
  Ohio PCR (Sohio Air British Petroleum Co.) VRDO 3.580% 9/1/06  5,000  5,000 
  Ohio Solid Waste Rev. (BP Exploration & Oil Inc.)
  VRDO 3.640% 9/1/06  9,025  9,025 
  Ohio Solid Waste Rev. (BP Exploration & Oil Inc.)
  VRDO 3.640% 9/1/06  3,140  3,140 
  Ohio Solid Waste Rev. (BP Exploration & Oil Inc.)
  VRDO 3.640% 9/1/06  5,125  5,125 
  Ohio Solid Waste Rev. (BP Exploration & Oil Inc.)
  VRDO 3.640% 9/1/06  3,000  3,000 
  Ohio Solid Waste Rev. (BP Exploration & Oil Inc.)
  VRDO 3.640% 9/1/06  8,005  8,005 
1 Ohio State (Putters) GO TOB VRDO 3.450% 9/7/06  2,575  2,575 
1 Ohio State Higher Ed 2006 Eclipse Trust TOB VRDO 3.440% 9/7/06 (3)  5,000  5,000 
1 Ohio State TOB VRDO 3.440% 9/7/06  10,400  10,400 
1 Ohio State Turnpike Comm Rev. TOB VRDO 3.460% 9/7/06 (3)  3,000  3,000 
  Ohio State Univ. General Receipts Athens VRDO 3.430% 9/7/06 (4)  5,025  5,025 
  Ohio State Univ. General Receipts Rev. CP 3.500% 11/7/06  8,500  8,500 
1 Ohio State Univ. General Receipts Rev. TOB VRDO 3.440% 9/7/06  5,360  5,360 
  Ohio State Univ. General Receipts Rev. VRDO 3.410% 9/7/06  700  700 
  Ohio State Univ. General Receipts Rev. VRDO 3.580% 9/7/06  3,100  3,100 
  Ohio State Univ. General Receipts Rev. VRDO 3.580% 9/7/06  2,100  2,100 
1 Ohio Turnpike Comm. Turnpike Rev. TOB VRDO 3.450% 9/7/06 (3)  16,500  16,500 
  Ohio Water Dev. Auth. PCR (FirstEnergy) VRDO 3.570% 9/1/06 LOC  17,450  17,450 
  Ohio Water Dev. Auth. PCR (FirstEnergy) VRDO 3.430% 9/7/06 LOC  1,250  1,250 
  Ohio Water Dev. Auth. PCR (FirstEnergy) VRDO 3.480% 9/7/06 LOC  3,000  3,000 
  Ohio Water Dev. Auth. PCR (FirstEnergy) VRDO 3.450% 9/7/06 LOC  18,000  18,000 
  Ohio Water Dev. Auth. PCR (Ohio Edison Co.) VRDO 3.640% 9/1/06 LOC  10,100  10,100 
1 Ohio Water Dev. Auth. PCR TOB VRDO 3.520% 9/7/06  5,000  5,000 
1 Ohio Water Dev. Auth. Rev. (Drinking Water Fund)
  TOB VRDO 3.450% 9/7/06  3,645  3,645 
  Ohio Water Dev. Auth. Rev. (Pure Water) VRDO 3.430% 9/7/06 (1)  12,275  12,275 
  Orrville Ohio Ind. Dev. (American Weather Seal Co.)
  VRDO 3.500% 9/7/06 LOC  8,000  8,000 
  Parma OH Hosp. Improvement Rev. (Parma
  Community General Hosp.) VRDO 3.400% 9/7/06 LOC  1,000  1,000 
  Port of Greater Cincinnati OH Dev. Auth. Rev.
  (National Underground Railroad Freedom Center) VRDO 3.480% 9/7/06 LOC  7,000  7,000 
  Portage County OH BAN 4.000% 10/26/06  11,115  11,130 
  Powell OH BAN 4.000% 11/1/06  3,500  3,505 
  Rickenbacker OH Port Auth. Econ. Dev. Rev.
  (YMCA of Central Ohio) VRDO 3.480% 9/7/06 LOC  7,145  7,145 
  Salem OH Hosp. Rev. VRDO 3.420% 9/7/06 LOC  1,970  1,970 
  Summit County OH Rev. (Western Reserve Academy)
  VRDO 3.430% 9/7/06 LOC  5,600  5,600 
  Toledo OH City Services Special Assessment VRDO 3.410% 9/7/06 LOC  8,300  8,300 
  Toledo OH City Services Special Assessment VRDO 3.410% 9/7/06 LOC  4,000  4,000 
  Toledo OH City Services Special Assessment VRDO 3.410% 9/7/06 LOC  7,000  7,000 
  Univ. of Akron OH General Receipts Rev. VRDO 3.410% 9/7/06 (3)  3,620  3,620 
  Univ. of Cincinnati OH General Receipts BAN 4.500% 3/28/07  7,100  7,138 
  Univ. of Cincinnati OH General Receipts BAN 4.750% 7/6/07  2,275  2,292 
  Univ. of Cincinnati OH General Receipts VRDO 3.410% 9/7/06 (2)  29,670  29,670 
  Univ. of Toledo OH General Receipts VRDO 3.570% 9/1/06 (3)  7,230  7,230 
  Total Municipal Bonds (Cost $958,746)          958,746  
  Other Assets and Liabilities—Net (1.8%)          17,763  
  Net Assets (100%)          976,509  


1 Security exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be sold in transactions exempt from registration, normally to qualified institutional buyers. At August 31, 2006, the aggregate value of these securities was $277,160,000, representing 28.4% of net assets.


KEY TO ABBREVIATIONS

ARS - Auction Rate Security.
BAN - Bond Anticipation Note.
COP - Certificate of Participation.
CP - Commercial Paper.
FR - Floating Rate.
GAN - Grant Anticipation Note.
GO - General Obligation Bond.
IDA - Industrial Development Authority Bond.
IDR - Industrial Development Revenue Bond.
PCR - Pollution Control Revenue Bond.
PUT - Put Option Obligation.
RAN - Revenue Anticipation Note.
TAN - Tax Anticipation Note.
TOB - Tender Option Bond.
TRAN - Tax Revenue Anticipation Note.
UFSD - Union Free School District.
USD - United School District.
VRDO - Variable Rate Demand Obligation.
(ETM) - Escrowed to Maturity.
(Prere.) - Prerefunded.

Scheduled principal and interest payments are guaranteed by:
(1) MBIA (Municipal Bond Insurance Association).
(2) AMBAC (Ambac Assurance Corporation).
(3) FGIC (Financial Guaranty Insurance Company).
(4) FSA (Financial Security Assurance).
(5) BIGI (Bond Investors Guaranty Insurance).
(6) Connie Lee Inc.
(7) FHA (Federal Housing Authority).
(8) CapMAC (Capital Markets Assurance Corporation).
(9) American Capital Access Financial Guaranty Corporation.
(10) XL Capital Assurance Inc.
(11) CIFG (CDC IXIS Financial Guaranty)
The insurance does not guarantee the market value of the municipal bonds.

LOC - Scheduled principal and interest payments are guaranteed by bank letter of credit.



Investment Securities: Securities are valued at amortized cost, which approximates market value.



Vanguard Ohio Long-Term Tax-Exempt Fund
Schedule of Investments
August 31, 2006
Coupon Maturity
Date		 Face
Amount
($000)		 Market
Value
($000)
   Municipal Bonds (98.9%)        
  Adams County OH School Dist. GO 5.550% 12/1/09 (1)  1,000  1,021 
  Akron OH GO 5.500% 12/1/18 (1)  1,315  1,421 
  Akron OH Income Tax Rev. (Community
  Learning Center) 5.000% 12/1/27 (3)  6,300 
  American Muni. Power Ohio Inc. (Omega JV) 5.250% 1/1/14 (2)  2,625  2,784 
  American Muni. Power Ohio Inc. (Omega JV) 5.250% 1/1/15 (2)  2,865  3,037 
  American Muni. Power Ohio Inc. (Omega JV) 5.250% 1/1/16 (2)  1,015  1,075 
  Amherst OH Exempt Village School Dist. GO 5.750% 12/1/11 (3)(Prere.)  1,300  1,420 
  Amherst OH Exempt Village School Dist. GO 5.750% 12/1/11 (3)(Prere.)  1,300  1,420 
  Avon OH Local School Dist. GO 5.250% 12/1/29 (1)  2,400  2,567 
  Bowling Green State Univ. Ohio General Receipts Rev 5.750% 6/1/10 (3)(Prere.)  2,250  2,437 
  Bowling Green State Univ. Ohio General Receipts Rev 5.750% 6/1/10 (3)(Prere.)  1,190  1,289 
  Butler County OH GO 5.250% 12/1/16  1,570  1,707 
  Butler County OH GO 5.250% 12/1/17  1,655  1,793 
  Butler County OH Sewer System Rev 5.375% 12/1/09 (3)(Prere.)  1,230  1,308 
  Butler County OH Transp. Improvement Dist. Rev 6.000% 4/1/08 (4)(Prere.)  4,000  4,226 
  Butler County OH Transp. Improvement Dist. Rev 6.000% 4/1/08 (4)(Prere.)  2,320  2,451 
  Butler County OH Waterworks Rev 5.250% 12/1/21 (2)  4,000  4,391 
  Canal Winchester OH Local School Dist. GO 5.500% 12/1/11 (3)(Prere.)  805  876 
  Canal Winchester OH Local School Dist. GO 5.500% 12/1/11 (3)(Prere.)  950  1,034 
  Canal Winchester OH Local School Dist. GO 5.500% 12/1/11 (3)(Prere.)  1,080  1,175 
  Canal Winchester OH Local School Dist. GO 5.000% 12/1/28 (1)  3,030  3,194 
  Chillicothe OH City School Dist 5.250% 12/1/25 (3)  1,745  1,896 
  Cincinnati OH City School Dist. GO 5.000% 12/1/26 (4)  5,525  5,798 
  Cincinnati OH City School Dist. Improvement GO 5.375% 12/1/11 (1)(Prere.)  3,350  3,626 
  Cincinnati OH Water System Rev 5.500% 12/1/13  1,380  1,485 
1 Cincinnati OH Water System Rev. TOB VRDO 3.450% 9/7/06  630  630 
  Cleveland OH Airport System Rev 5.250% 1/1/12 (4)  4,985  5,215 
  Cleveland OH GO 5.375% 9/1/10 (2)  1,000  1,066 
  Cleveland OH GO 5.500% 12/1/10 (3)(Prere.)  1,135  1,228 
  Cleveland OH GO 5.500% 12/1/11 (3)  1,340  1,448 
  Cleveland OH GO 5.375% 9/1/12 (2)  1,000  1,091 
  Cleveland OH GO 5.500% 12/1/12 (3)  1,415  1,528 
  Cleveland OH GO 5.250% 8/1/13 (3)(Prere.)  2,400  2,622 
  Cleveland OH GO 5.500% 10/1/20 (2)  7,350  8,518 
  Cleveland OH GO 5.500% 10/1/21 (2)  3,675  4,272 
  Cleveland OH GO 5.500% 10/1/22 (2)  3,870  4,513 
  Cleveland OH School Dist. GO 0.000% 12/1/08 (3)(ETM)  400  369 
  Cleveland OH State Univ. Rev 5.250% 6/1/19 (3)  2,825  3,058 
2 Cleveland OH Water Works Rev 5.500% 1/1/21 (1)  9,635  11,040 
  Cleveland OH Water Works Rev. VRDO 3.400% 9/7/06 (4)  5,635  5,635 
  Columbus OH City School Dist. School Fac
  Construction & Improvement GO 5.250% 12/1/24 (4)  2,390  2,596 
  Columbus OH City School Dist. School Fac.
  Construction & Improvement GO 5.250% 12/1/28 (4)  2,070  2,228 
  Columbus OH Regional Airport Auth. Airport Refunding
  Rev 5.500% 1/1/17 (3)  1,385  1,503 
  Columbus OH Regional Airport Auth. Airport Refunding
  Rev 5.500% 1/1/18 (3)  1,455  1,572 
  Cuyahoga County OH (Capital Improvement) GO 5.750% 12/1/10 (Prere.)  2,000  2,165 
  Cuyahoga County OH (Capital Improvement) GO 5.750% 12/1/10 (Prere.)  2,000  2,165 
  Cuyahoga County OH (Capital Improvement) GO 5.750% 12/1/10 (Prere.)  2,000  2,165 
  Cuyahoga County OH (Capital Improvement) GO 5.750% 12/1/10 (Prere.)  1,710  1,851 
  Dayton OH City School Dist. (School Fac.) 5.000% 12/1/29 (3)  8,000  8,339 
  Defiance OH Waterworks System GO 5.650% 12/1/18 (2)  1,130  1,198 
  Erie County OH Hosp. Fac. Rev. (Firelands Regional
  Medical Center) 5.500% 8/15/22  1,750  1,851 
  Fairborn OH City School Dist. School Improvement GO 5.500% 12/1/16 (3)  1,840  1,995 
  Fairborn OH City School Dist. School Improvement GO 5.375% 12/1/20 (3)  1,200  1,288 
  Fairfield County OH Hosp. Rev. (Lancaster-
  Fairfield Hosp.) 5.375% 6/15/15 (1)  3,000  3,256 
  Franklin County OH Convention Center Rev 0.000% 12/1/07 (1)  4,355  4,164 
  Franklin County OH Hosp. Rev. (OhioHealth Corp.)
  VRDO 3.390% 9/7/06 (2)  1,800  1,800 
  Franklin County OH Hosp. Rev. (Trinity Health
  Credit Group) 5.000% 6/1/19  4,035  4,271 
  Franklin County OH Hosp. Rev. (Trinity Health
  Credit Group) 5.000% 6/1/21  4,465  4,694 
  Franklin County OH Hosp. Rev. (U.S. Health Corp.)
  VRDO 3.400% 9/7/06 LOC  900  900 
  Gallia County OH Hosp. Rev. (Holzer Medical Center) 5.125% 10/1/13 (2)  2,000  2,067 
  Gallia County OH Local School Dist 5.000% 12/1/26 (4)  2,075  2,207 
  Gallia County OH Local School Dist 5.000% 12/1/27 (4)  2,180  2,311 
  Gallipolis Ohio City School Dist. (School Fac.) 5.000% 12/1/30 (1)  4,040  4,266 
  Garfield Heights OH City School Dist. School
  Improvement GO 5.500% 12/15/18 (1)  1,640  1,772 
  Greater Cleveland OH Regional Transp. Auth. GO 5.650% 12/1/06 (3)(Prere.)  1,000  1,015 
  Greater Cleveland OH Regional Transp. Auth. GO 5.375% 12/1/08 (3)(Prere.)  1,665  1,745 
  Hamilton County OH Convention Center Fac.
   Auth. Rev. Second Lien 5.250% 12/1/20 (3)  1,185  1,281 
  Hamilton County OH Convention Center Fac.
   Auth. Rev. Second Lien 5.250% 12/1/21 (3)  1,245  1,344 
  Hamilton County OH Convention Center Fac.
   Auth. Rev. Second Lien 5.250% 12/1/23 (3)  1,380  1,485 
  Hamilton County OH Convention Center Fac.
  Auth. Rev. Second Lien 5.250% 12/1/24 (3)  1,455  1,562 
  Hamilton County OH Econ. Dev. Rev. (King Highland
  Community Urban) 5.250% 6/1/28 (1)  7,290  7,909 
  Hamilton County OH Hosp. Fac. Rev. (Cincinnati
  Children's Hosp.) 5.200% 5/15/09 (1)  2,000  2,047 
  Hamilton County OH Hosp. Fac. Rev. (Cincinnati
  Children's Hosp.) 5.500% 5/15/19 (3)  2,865  3,145 
  Hamilton County OH Hosp. Fac. Rev. (Cincinnati
  Children's Hosp.) 5.500% 5/15/20 (3)  3,020  3,307 
  Hamilton County OH Sales Tax Rev 0.000% 12/1/28 (2)  9,915  3,597 
  Hamilton County OH Sales Tax Rev. (Hamilton County
  Football) 5.500% 6/1/08 (1)(Prere.)  575  599 
  Hamilton County OH Sewer System Rev 5.450% 12/1/09 (3)  3,250  3,436 
  Hamilton County OH Sewer System Rev 5.625% 6/1/10 (1)(Prere.)  965  1,041 
  Hamilton County OH Sewer System Rev 5.625% 6/1/10 (1)(Prere.)  755  815 
  Hamilton County OH Sewer System Rev 5.250% 12/1/11 (1)(Prere.)  1,355  1,459 
  Hamilton County OH Sewer System Rev 5.250% 12/1/11 (1)(Prere.)  1,000  1,076 
  Highland OH Local School Dist. School Improvement
  GO 5.750% 12/1/11 (4)(Prere.)  1,510  1,661 
  Hilliard OH School Dist. GO 0.000% 12/1/12 (3)  3,220  2,533 
  Hilliard OH School Dist. GO 0.000% 12/1/13 (3)  3,220  2,425 
  Hilliard OH School Dist. GO 0.000% 12/1/14 (3)  2,720  1,961 
  Hilliard OH School Dist. GO 0.000% 12/1/15 (3)  3,720  2,568 
  Hilliard OH School Dist. GO 5.250% 12/1/16 (3)  2,000  2,158 
  Hilliard OH School Dist. GO 5.000% 12/1/27 (1)  2,895  3,062 
  Indian Hill OH Exempt Village School Dist. Hamilton
  County GO 5.500% 12/1/11 (Prere.)  1,295  1,411 
  Jackson OH Local School Dist. Stark & Summit
  Counties Construction & Improvement 5.250% 12/1/26 (3)  4,350  4,706 
  Kent State Univ. Ohio VRDO 3.410% 9/7/06 (1)  400  400 
  Lake County OH Hosp. Fac. Rev. (Lake Hosp.
  System Inc.) 5.375% 8/15/15 (2)  2,900  3,002 
  Lake Ohio Local School Dist. Stark County OH GO 5.750% 12/1/10 (3)(Prere.)  1,000  1,083 
  Little Miami Ohio Local School Dist 5.250% 12/1/27 (4)  3,235  3,527 
  Logan Hocking OH Local School Dist. GO 5.500% 12/1/11 (1)(Prere.)  1,675  1,823 
  Lorain County OH GO 5.500% 12/1/22 (3)  1,500  1,630 
  Lorain County OH Hosp. Fac. Rev. (Catholic
  Healthcare Partners) 6.000% 9/1/08 (1)  1,250  1,301 
  Lorain County OH Hosp. Fac. Rev. (Catholic
  Healthcare Partners) 5.400% 10/1/21  4,000  4,243 
  Lucas County OH Hosp. Rev. (ProMedica Health Care) 5.750% 11/15/14 (1)(ETM)  5,360  5,488 
  Lucas County OH Hosp. Rev. (ProMedica Health Care) 5.750% 11/15/14 (1)  640  655 
  Lucas County OH Hosp. Rev. (ProMedica Health Care) 5.625% 11/15/15 (2)  2,500  2,658 
  Lucas County OH Hosp. Rev. (ProMedica Health Care) 5.625% 11/15/17 (2)  2,075  2,206 
  Mad River OH Local School Dist. GO 5.750% 12/1/12 (3)(Prere.)  1,195  1,333 
  Marysville OH Exempt Village School Dist. COP 5.250% 6/1/15 (1)(Prere.)  2,095  2,308 
  Marysville OH Exempt Village School Dist. COP 5.250% 6/1/15 (1)(Prere.)  2,035  2,242 
  Marysville OH Exempt Village School Dist. COP 5.250% 6/1/15 (1)(Prere.)  2,140  2,357 
  Marysville OH Exempt Village School Dist. COP 5.250% 6/1/15 (1)(Prere.)  3,000  3,305 
  Mason OH City School Dist. GO 5.250% 12/1/20 (3)  1,500  1,700 
  Mason OH City School Dist. GO 5.250% 12/1/21 (3)  1,500  1,703 
  Miami Univ. of OH General Receipts Refunding 5.250% 12/1/20 (2)  2,000  2,169 
  Milford OH Exempt Village School Dist.
  School Improvement GO 6.000% 12/1/11 (4)(Prere.)  1,425  1,585 
  Milford OH Exempt Village School Dist.
  School Improvement GO 6.000% 12/1/11 (4)(Prere.)  1,600  1,779 
  Montgomery County OH Rev. (Catholic
  Health Initiative) 5.500% 9/1/15  3,270  3,504 
  Montgomery County OH Rev. (Catholic
  Health Initiative) 5.000% 5/1/30  7,630  7,895 
  Nordonia Hills OH Local School Dist. GO 0.000% 12/1/11 (2)  1,200  984 
  Nordonia Hills OH Local School Dist. GO 0.000% 12/1/12 (2)  1,700  1,337 
  North Olmsted OH GO (Library Improvement) 5.500% 12/1/10 (3)(Prere.)  1,355  1,455 
  Oak Hills OH Local School Dist. GO 7.200% 12/1/09 (1)  1,625  1,799 
  Ohio Building Auth. Rev. (State Correctional Fac.) 5.750% 4/1/10 (Prere.)  2,000  2,161 
  Ohio Building Auth. Rev. (State Fac. Art Building) 5.500% 4/1/14  1,585  1,702 
  Ohio Building Auth. Rev. (State Fac. Art Building) 5.500% 4/1/15  1,500  1,611 
  Ohio Building Auth. Rev. (State Fac. Highway
  Safety Building Fund) 5.500% 10/1/17 (4)  1,305  1,406 
  Ohio Building Auth. Rev. (State Fac. Highway
  Safety Building Fund) 5.500% 10/1/18 (4)  1,380  1,486 
  Ohio Common Schools GO VRDO 3.380% 9/7/06  1,000  1,000 
  Ohio Common Schools GO VRDO 3.430% 9/7/06  4,100  4,100 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) 5.500% 10/1/19  5,000  5,435 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) 5.000% 12/1/27 (2)  6,000  6,278 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) VRDO 3.400% 9/1/06  10,425  10,425 
  Ohio Higher Educ. Fac. Comm. Rev. (Case Western
  Reserve Univ.) VRDO 3.450% 9/7/06  4,810  4,810 
  Ohio Higher Educ. Fac. Comm. Rev. (Denison Univ.) 5.500% 11/1/14  1,000  1,090 
  Ohio Higher Educ. Fac. Comm. Rev.
  (John Carroll Univ.) 5.750% 4/1/07 (1)(Prere.)  4,000  4,129 
  Ohio Higher Educ. Fac. Comm. Rev.
  (John Carroll Univ.) 5.850% 4/1/09 (1)(Prere.)  2,875  3,086 
  Ohio Higher Educ. Fac. Comm. Rev.
  (John Carroll Univ.) 5.000% 4/1/32  3,415  3,572 
  Ohio Higher Educ. Fac. Comm. Rev. (Kenyon College) 5.000% 7/1/41  5,000  5,151 
  Ohio Higher Educ. Fac. Comm. Rev. (Northern Univ.) 5.000% 5/1/26  5,275  5,516 
  Ohio Higher Educ. Fac. Comm. Rev. (Oberlin
  College Project) VRDO 3.450% 9/7/06  2,220  2,220 
  Ohio Higher Educ. Fac. Comm. Rev. (Oberlin College) 5.000% 10/1/33  5,000  5,187 
  Ohio Higher Educ. Fac. Comm. Rev. (Univ. of Dayton) 0.000% 12/1/06 (3)  1,000  991 
  Ohio Higher Educ. Fac. Comm. Rev. (Univ. of Dayton) 5.375% 12/1/16 (2)  1,795  1,936 
  Ohio Higher Educ. Fac. Comm. Rev. (Xavier Univ.) 5.300% 5/15/07 (1)(Prere.)  2,200  2,270 
  Ohio Housing Finance Agency Mortgage Rev 5.450% 9/1/31  1,315  1,333 
  Ohio Housing Finance Agency Mortgage Rev 5.625% 3/1/32  2,545  2,621 
  Ohio PCR (Sohio Air British Petroleum Co.) VRDO 3.580% 9/1/06  2,000  2,000 
  Ohio Solid Waste Rev. (Waste Management Inc.) PUT 4.850% 11/1/07  2,500  2,518 
  Ohio State Univ. General Receipts Rev 5.250% 6/1/23  3,000  3,223 
  Ohio Turnpike Comm. Turnpike Rev 5.500% 2/15/18  3,150  3,370 
  Ohio Turnpike Comm. Turnpike Rev 5.500% 2/15/19  2,235  2,391 
  Ohio Turnpike Comm. Turnpike Rev 5.500% 2/15/20  1,570  1,680 
  Ohio Turnpike Comm. Turnpike Rev 5.500% 2/15/24 (3)  5,000  5,853 
  Ohio Water Dev. Auth. PCR 5.125% 12/1/07 (1)(Prere.)  1,900  1,955 
  Ohio Water Dev. Auth. PCR 5.500% 6/1/21  6,435  7,471 
  Ohio Water Dev. Auth. PCR 5.500% 6/1/22  6,350  7,398 
  Ohio Water Dev. Auth. PCR 5.500% 6/1/23  2,155  2,518 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.375% 6/1/12 (Prere.)  2,100  2,286 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.375% 6/1/12 (Prere.)  2,170  2,362 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.375% 6/1/12 (Prere.)  2,735  2,978 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.500% 6/1/21 (4)  1,215  1,411 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.500% 6/1/22  5,370  6,249 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.500% 12/1/22  4,690  5,475 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.500% 6/1/23  1,225  1,430 
  Ohio Water Dev. Auth. Rev. (Fresh
  Water Improvement) 5.500% 12/1/23  1,115  1,305 
  Ohio Water Dev. Auth. Rev. (Pure Water) 7.000% 12/1/09 (2)(ETM)  1,050  1,102 
  Ohio Water Dev. Auth. Rev. (Pure Water) 5.500% 12/1/11 (2)  5  5 
  Olentangy OH Local School Dist. GO 5.500% 6/1/12 (4)(Prere.)  1,200  1,314 
  Olentangy OH Local School Dist. GO 5.500% 12/1/16 (4)  30  33 
  Olentangy OH Local School Dist. GO 5.000% 12/1/30 (4)  5,000  5,280 
  Olentangy OH Local School Dist. School Fac.
  Construction & Improvement 5.500% 12/1/19 (3)  1,300  1,434 
  Olentangy OH Local School Dist. School Fac.
  Construction & Improvement 5.500% 12/1/20 (3)  2,750  3,032 
  Olentangy OH Local School Dist. School Fac. 5.250% 12/1/21 (3)  1,400  1,515 
  Construction & Improvement 5.250% 12/1/21 (3)  1,400  1,515 
  Parma OH Hosp. Improvement Rev. (Parma
  Community General Hosp.) 5.250% 11/1/08 (Prere.)  2,000  2,086 
  Parma OH Hosp. Improvement Rev. (Parma
  Community General Hosp.) VRDO 3.400% 9/7/06 LOC  3,500  3,500 
  Plain OH Local School Dist. GO 5.500% 12/1/17 (3)  1,175  1,276 
  Reynoldsburg OH School Dist. GO 0.000% 12/1/09 (3)  1,465  1,299 
  Reynoldsburg OH School Dist. GO 0.000% 12/1/10 (3)  1,465  1,250 
  Richland County OH GO 6.950% 12/1/11 (2)  450  460 
  Richland County OH GO 5.400% 12/1/15 (2)  1,120  1,143 
  Rocky River OH City School Dist. GO 5.375% 12/1/17  2,200  2,457 
  Ross County OH Hosp. Fac. Rev. (Adena
  Health System) VRDO 3.560% 9/1/06 (11)  3,600  3,600 
  Salem OH Hosp. Rev. VRDO 3.420% 9/7/06 LOC  1,430  1,430 
  Sugarcreek OH Local School Dist. GO 5.250% 12/1/19 (1)  1,215  1,318 
  Summit County OH GO 6.250% 12/1/10 (3)(Prere.)  1,420  1,576 
  Summit County OH GO 6.500% 12/1/10 (3)(Prere.)  2,000  2,240 
  Summit County OH GO 5.750% 12/1/12 (3)(Prere.)  1,800  2,018 
  Summit County OH GO 5.750% 12/1/12 (3)(Prere.)  1,910  2,141 
  Summit County OH GO 5.750% 12/1/12 (3)(Prere.)  2,020  2,264 
  Summit County OH GO 5.750% 12/1/12 (3)(Prere.)  1,420  1,592 
  Summit County OH GO 5.750% 12/1/12 (3)(Prere.)  1,595  1,788 
  Summit County OH GO 5.500% 12/1/20 (3)  1,725  2,002 
  Summit County OH Sanitary Sewer
  System Improvement GO 5.500% 12/1/11 (3)(Prere.)  1,015  1,111 
  Teays Valley OH Local School Dist. GO 5.000% 12/1/27 (1)  3,040  3,215 
  Tri Valley OH Local School Dist. GO 5.500% 12/1/16 (3)  1,255  1,413 
  Tri Valley OH Local School Dist. GO 5.500% 12/1/19 (3)  1,785  2,050 
  Univ. of Akron OH General Receipts Rev 5.500% 1/1/10 (3)(Prere.)  2,545  2,718 
  Univ. of Cincinnati OH COP 5.500% 6/1/14 (1)  1,000  1,069 
  Univ. of Cincinnati OH General Receipts 5.750% 6/1/11 (3)(Prere.)  1,285  1,414 
  Univ. of Cincinnati OH General Receipts 5.750% 6/1/11 (3)(Prere.)  1,500  1,650 
  Univ. of Cincinnati OH General Receipts 5.750% 6/1/11 (3)(Prere.)  2,500  2,750 
  Univ. of Cincinnati OH General Receipts 5.375% 6/1/17  2,000  2,141 
  Univ. of Cincinnati OH General Receipts 5.375% 6/1/18  2,595  2,775 
  Univ. of Cincinnati OH General Receipts 5.375% 6/1/20  2,880  3,069 
  Univ. of Toledo OH General Receipts 5.250% 6/1/16 (3)  1,080  1,150 
  Univ. of Toledo OH General Receipts VRDO 3.570% 9/1/06 (3)  3,255  3,255 
  Westerville OH City School Dist. GO 5.500% 6/1/11 (1)(Prere.)  2,000  2,162 
  Westerville OH City School Dist. GO 5.500% 6/1/11 (1)(Prere.)  1,225  1,324 
  Woodridge OH School Dist. GO 6.800% 12/1/14 (2)  2,000  2,306 
  Wooster OH School Dist. GO 0.000% 12/1/09 (4)  2,195  1,947 
  Wooster OH School Dist. GO 0.000% 12/1/10 (4)  2,265  1,933 
  Wooster OH School Dist. GO 0.000% 12/1/11 (4)  2,315  1,899 
   Outside Ohio
  Puerto Rico GO 5.500% 7/1/20 (1)  1,600  1,844 
  Puerto Rico GO 5.500% 7/1/29  1,500  1,694 
  Puerto Rico GO 5.000% 7/1/34  2,000  2,041 
  Puerto Rico Highway & Transp. Auth. Rev 5.500% 7/1/14 (Prere.)  3,400  3,793 
  Puerto Rico Infrastructure Financing Auth.
  Special Tax Rev 5.500% 7/1/28 (3)  7,625  8,972 
  Puerto Rico Muni. Finance Agency 5.250% 8/1/19 (4)  3,000  3,228 
  Puerto Rico Muni. Finance Agency 5.250% 8/1/20 (4)  2,500  2,690 
  Puerto Rico Public Buildings Auth. Govt. Fac. Rev 5.500% 7/1/21 (1)  2,000  2,306 
  Puerto Rico Public Finance Corp. 5.500% 2/1/12 (Prere.)  3,005  3,274 
  Puerto Rico Public Finance Corp. 6.000% 8/1/26 (ETM)  305  380 
  Puerto Rico Public Finance Corp. 5.500% 8/1/29  995  1,055 
  Virgin Islands Public Finance Auth. Rev 5.250% 10/1/17  2,000  2,126 
  Total Municipal Bonds (Cost $548,604)          566,997  
  Other Assets and Liabilities—Net (1.1%)          6,236 
  Net Assets (100%)          573,233  

1 Security exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be sold in transactions exempt from registration, normally to qualified institutional buyers. At August 31, 2006, the value of this security represented 0.1% of net assets.
2 Securities with a value of $745,000 have been segregated as initial margin for open futures contracts.

KEY TO ABBREVIATIONS
ARS - Auction Rate Security.
BAN - Bond Anticipation Note.
COP - Certificate of Participation.
CP - Commercial Paper.
FR - Floating Rate.
GAN - Grant Anticipation Note.
GO - General Obligation Bond.
IDA - Industrial Development Authority Bond.
IDR - Industrial Development Revenue Bond.
PCR - Pollution Control Revenue Bond.
PUT - Put Option Obligation.
RAN - Revenue Anticipation Note.
TAN - Tax Anticipation Note.
TOB - Tender Option Bond.
TRAN - Tax Revenue Anticipation Note.
UFSD - Union Free School District.
USD - United School District.
VRDO - Variable Rate Demand Obligation.
(ETM) - Escrowed to Maturity.
(Prere.) - Prerefunded.

Scheduled principal and interest payments are guaranteed by:
(1) MBIA (Municipal Bond Insurance Association).
(2) AMBAC (Ambac Assurance Corporation).
(3) FGIC (Financial Guaranty Insurance Company).
(4) FSA (Financial Security Assurance).
(5) BIGI (Bond Investors Guaranty Insurance).
(6) Connie Lee Inc.
(7) FHA (Federal Housing Authority).
(8) CapMAC (Capital Markets Assurance Corporation).
(9) American Capital Access Financial Guaranty Corporation.
(10) XL Capital Assurance Inc.
(11) CIFG (CDC IXIS Financial Guaranty)
The insurance does not guarantee the market value of the municipal bonds.

LOC - Scheduled principal and interest payments are guaranteed by bank letter of credit.



Investment Securities: Bonds, and temporary cash investments acquired over 60 days to maturity, are valued using the latest bid prices or using valuations based on a matrix system (which considers such factors as security prices, yields, maturities, and ratings), both as furnished by independent pricing services. Other temporary cash investments are valued at amortized cost, which approximates market value. Securities for which market quotations are not readily available, or whose values have been materially affected by events occurring before the fund’s pricing time but after the close of the securities’ primary markets, are valued by methods deemed by the board of trustees to represent fair value.

At August 31, 2006, the cost of investment securities for tax purposes was $549,985,000. Net unrealized appreciation of investment securities for tax purposes was $17,012,000, consisting of unrealized gains of $17,318,000 on securities that had risen in value since their purchase and $306,000 in unrealized losses on securities that had fallen in value since their purchase.

Futures Contracts: Futures contracts are valued at their quoted daily settlement prices.

At August 31, 2006, the aggregate settlement value of open futures contracts expiring in December 2006, and the related unrealized appreciation (depreciation) were:



($000)
Futures Contracts Number of
Long (Short)
Contracts		 Aggregate
Settlement
Value
 Unrealized
Appreciation
(Depreciation)
30-Year U.S. Treasury Bond (125) 13,883  (76)


Unrealized appreciation (depreciation) on open futures contracts is required to be treated as realized gain (loss) for tax purposes.



Item 2: Controls and Procedures.

(a) Disclosure Controls and Procedures. The Principal Executive and Financial Officers concluded that the Registrant’s Disclosure Controls and Procedures are effective based on their evaluation of the Disclosure Controls and Procedures as of a date within 90 days of the filing date of this report.

(b) Internal Control Over Financial Reporting. During the last fiscal quarter, there was no significant change in the Registrant’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3:

 Exhibits.
(a) Certifications.

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

VANGUARD OHIO TAX-FREE FUNDS

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: October 18, 2006

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

VANGUARD OHIO TAX-FREE FUNDS

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: October 18, 2006

VANGUARD OHIO TAX-FREE FUNDS

BY: (signature)
(HEIDI STAM)
THOMAS J. HIGGINS*
TREASURER

Date: October 18, 2006

* By Power of Attorney. See File Number 002-65955-99, filed on July 27, 2006. Incorporated by Reference.