The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3M CO. COM 88579Y101   1,569,000 15,674 SH   SOLE   0 0 15,674
ABBOTT LABORATORIES COM 002824100   10,696,000 98,110 SH   SOLE   0 0 98,110
ABBVIE INC COM 00287Y109   2,558,000 18,988 SH   SOLE   0 0 18,988
ADOBE SYSTEMS INCORPORATED COM 00724F101   7,233,000 14,792 SH   SOLE   0 0 14,792
AFLAC INCORPORATED COM 001055102   237,000 3,400 SH   SOLE   0 0 3,400
AIR PRODUCTS & CHEMICALS COM 009158106   484,000 1,615 SH   SOLE   0 0 1,615
ALLSTATE CORPORATION COM 020002101   545,000 4,994 SH   SOLE   0 0 4,994
ALPHABET INC NON-VOTING CL C COM 02079K107   15,880,000 131,269 SH   SOLE   0 0 131,269
ALPHABET INC VOTING CL A COM 02079K305   1,447,000 12,085 SH   SOLE   0 0 12,085
ALTRIA GROUP COM 02209S103   214,000 4,719 SH   SOLE   0 0 4,719
AMAZON.COM INC COM 023135106   14,333,000 109,947 SH   SOLE   0 0 109,947
AMERICAN ELECTRIC POWER COM 025537101   304,000 3,611 SH   SOLE   0 0 3,611
AMERICAN EXPRESS INC COM 025816109   4,723,000 27,115 SH   SOLE   0 0 27,115
AMGEN INC COM 031162100   1,125,000 5,069 SH   SOLE   0 0 5,069
APPLE INC COM 037833100   34,462,000 177,666 SH   SOLE   0 0 177,666
ARCHER DANIELS MIDLAND CO COM 039483102   1,226,000 16,228 SH   SOLE   0 0 16,228
AT&T CORP NEW COM 00206R102   586,000 36,759 SH   SOLE   0 0 36,759
ATMOS ENERGY CORP COM 049560105   2,827,000 24,302 SH   SOLE   0 0 24,302
BALL CORP COM 058498106   383,000 6,585 SH   SOLE   0 0 6,585
BANK OF AMERICA COM 060505104   1,405,000 48,954 SH   SOLE   0 0 48,954
BANK OF NEW YORK MELLON CORP COM 064058100   607,000 13,627 SH   SOLE   0 0 13,627
BECTON DICKINSON COM 075887109   11,704,000 44,333 SH   SOLE   0 0 44,333
BERKSHIRE HATHAWAY INC DEL CLA COM 084670108   4,142,000 8 SH   SOLE   0 0 8
BERKSHIRE HATHAWAY INC DEL CLA COM 084670702   1,372,000 4,023 SH   SOLE   0 0 4,023
BOEING COM 097023105   2,027,000 9,598 SH   SOLE   0 0 9,598
BRISTOL-MYERS SQUIBB COMPANY COM 110122108   1,117,000 17,472 SH   SOLE   0 0 17,472
C S X CORPORATION COM 126408103   858,000 25,151 SH   SOLE   0 0 25,151
CABLE ONE INC COM 12685J105   206,000 313 SH   SOLE   0 0 313
CARRIER GLOBAL COM 14448C104   547,000 11,008 SH   SOLE   0 0 11,008
CATERPILLAR INCORPORATED COM 149123101   8,724,000 35,456 SH   SOLE   0 0 35,456
CHEMOURS CO COM 163851108   26,618,000 721,562 SH   SOLE   0 0 721,562
CHEVRON CORP COM 166764100   8,016,000 50,942 SH   SOLE   0 0 50,942
CHURCH & DWIGHT CO INC COM 171340102   14,771,000 147,368 SH   SOLE   0 0 147,368
CISCO SYSTEMS INC COM 17275R102   7,407,000 143,165 SH   SOLE   0 0 143,165
COCA-COLA COMPANY COM 191216100   2,604,000 43,234 SH   SOLE   0 0 43,234
COLGATE-PALMOLIVE COMPANY COM 194162103   426,000 5,534 SH   SOLE   0 0 5,534
COMCAST CORP NEW CL A COM 20030N101   309,000 7,427 SH   SOLE   0 0 7,427
CONOCOPHILLIPS COM 20825C104   631,000 6,087 SH   SOLE   0 0 6,087
CORNING INC. COM 219350105   827,000 23,600 SH   SOLE   0 0 23,600
CORTEVA INC COM 22052L104   74,971,000 1,308,389 SH   SOLE   0 0 1,308,389
COSTCO CO INC COM 22160K105   297,000 552 SH   SOLE   0 0 552
CVS CAREMARK CORPORATION COM 126650100   768,000 11,106 SH   SOLE   0 0 11,106
DANAHER CORP COM 235851102   979,000 4,080 SH   SOLE   0 0 4,080
DEERE AND CO. COM 244199105   556,000 1,373 SH   SOLE   0 0 1,373
DENTSPLY SIRONA INC COM 24906P109   732,000 18,291 SH   SOLE   0 0 18,291
DISCOVER FINANCIAL SERVICES COM 254709108   377,000 3,226 SH   SOLE   0 0 3,226
DOMINION RESOURCES INC OF VA COM 25746U109   2,597,000 50,144 SH   SOLE   0 0 50,144
DOVER CORPORATION COM 260003108   374,000 2,535 SH   SOLE   0 0 2,535
DOW CHEMICAL COMPANY (THE) COM 260557103   65,628,000 1,232,222 SH   SOLE   0 0 1,232,222
DTE ENERGY COM 233331107   326,000 2,960 SH   SOLE   0 0 2,960
DU PONT (E.I.) DE NEMOURS & CO COM 263534109   74,791,000 1,046,906 SH   SOLE   0 0 1,046,906
DUKE ENERGY CORP COM 26441C204   1,251,000 13,935 SH   SOLE   0 0 13,935
ELI LILLY & CO COM 532457108   2,493,000 5,316 SH   SOLE   0 0 5,316
ELME COMMUNITIES COM 939653101   627,000 38,120 SH   SOLE   0 0 38,120
EMERSON ELECTRIC CO. COM 291011104   1,284,000 14,203 SH   SOLE   0 0 14,203
ENBRIDGE INC. COM 29250N105   904,000 24,324 SH   SOLE   0 0 24,324
ESSENTIAL UTILITIES INC COM 29670G102   7,009,000 175,629 SH   SOLE   0 0 175,629
EXXON MOBIL CORPORATION COM 30231G102   12,222,000 113,957 SH   SOLE   0 0 113,957
FEDERAL REALTY INV TR S B I COM 313745101   802,000 8,289 SH   SOLE   0 0 8,289
FEDEX CORP COM 31428X106   5,402,000 21,792 SH   SOLE   0 0 21,792
FIRST SOLAR INC COM 336433107   246,000 1,293 SH   SOLE   0 0 1,293
FISERV INC COM 337738108   377,000 2,990 SH   SOLE   0 0 2,990
FNB CORP COM 302520101   139,000 12,110 SH   SOLE   0 0 12,110
FRANKLIN RESOURCES INC COM 354613101   590,000 22,095 SH   SOLE   0 0 22,095
GE HEALTHCARE TECHNOLOGIES COM 36266g107   277,000 3,404 SH   SOLE   0 0 3,404
GENERAL ELECTRIC COMPANY COM 369604301   1,423,000 12,953 SH   SOLE   0 0 12,953
GENERAL MILLS INC COM 370334104   1,167,000 15,220 SH   SOLE   0 0 15,220
GLOBALSTAR INC COM 378973408   16,000 15,000 SH   SOLE   0 0 15,000
HERSHEY COMPANY COM 427866108   3,016,000 12,077 SH   SOLE   0 0 12,077
HOME DEPOT COM 437076102   1,982,000 6,380 SH   SOLE   0 0 6,380
HONEYWELL INTERNATIONAL INC COM 438516106   6,407,000 30,876 SH   SOLE   0 0 30,876
HP INC COM 40434L105   240,000 7,819 SH   SOLE   0 0 7,819
ILLINOIS TOOL WORKS INC. COM 452308109   15,081,000 60,286 SH   SOLE   0 0 60,286
INTEL CORP COM COM 458140100   4,269,000 127,658 SH   SOLE   0 0 127,658
INTERNATIONAL BUSINESS MACHINE COM 459200101   1,934,000 14,453 SH   SOLE   0 0 14,453
INTERNATIONAL FLAVORS & FRAGRA COM 459506101   12,037,000 151,233 SH   SOLE   0 0 151,233
INTUIT INC COM 461202103   1,714,000 3,740 SH   SOLE   0 0 3,740
ISHARES MSCI EAFE INDEX COM 464287465   240,000 3,315 SH   SOLE   0 0 3,315
ISHARES NASDAQ BIOTECH INDEX COM 464287556   8,528,000 67,167 SH   SOLE   0 0 67,167
ISHARES RUSSELL 2000 IDX COM 464287655   5,419,000 28,937 SH   SOLE   0 0 28,937
ISHARES RUSSELL MIDCAP INDEX COM 464287499   8,040,000 110,093 SH   SOLE   0 0 110,093
JOHNSON & JOHNSON COM 478160104   18,011,000 108,816 SH   SOLE   0 0 108,816
JPMORGAN CHASE & CO. COM 46625H100   14,216,000 97,745 SH   SOLE   0 0 97,745
KELLOGG COMPANY COM 487836108   2,521,000 37,406 SH   SOLE   0 0 37,406
KIMBERLY-CLARK CORP COM 494368103   2,620,000 18,978 SH   SOLE   0 0 18,978
KIMCO REALTY CORP REIT COM 49446R109   1,297,000 65,761 SH   SOLE   0 0 65,761
LABORATORY CORP OF AMERICA COM 50540R409   1,588,000 6,582 SH   SOLE   0 0 6,582
LINDE PLC COM G54950103   488,000 1,280 SH   SOLE   0 0 1,280
LOCKHEED MARTIN COM 539830109   895,000 1,945 SH   SOLE   0 0 1,945
LOWES COS COM 548661107   19,781,000 87,643 SH   SOLE   0 0 87,643
M & T BANK CORP COM 55261F104   1,677,000 13,550 SH   SOLE   0 0 13,550
MANPOWER INC WISCONSIN COM 56418H100   380,000 4,782 SH   SOLE   0 0 4,782
MARRIOTT INTERNATIONAL, NEW IN COM 571903202   11,189,000 60,915 SH   SOLE   0 0 60,915
MARRIOTT VACATIONS WORLDWIDE C COM 57164Y107   218,000 1,775 SH   SOLE   0 0 1,775
MC DONALD'S CORPORATION COM 580135101   16,647,000 55,784 SH   SOLE   0 0 55,784
MEDTRONIC INC COM G5960L103   553,000 6,275 SH   SOLE   0 0 6,275
MERCK & COMPANY INCORPORATED N COM 58933Y105   10,504,000 91,027 SH   SOLE   0 0 91,027
META PLATFORMS INC COM 30303M102   416,000 1,450 SH   SOLE   0 0 1,450
METTLER-TOLEDO INTL INC COM 592688105   256,000 195 SH   SOLE   0 0 195
MICROSOFT CORPORATION COM 594918104   39,040,000 114,641 SH   SOLE   0 0 114,641
MONDELEZ INTL INC COM 609207105   572,000 7,848 SH   SOLE   0 0 7,848
MORGAN STANLEY & CO COM 617446448   773,000 9,051 SH   SOLE   0 0 9,051
MOTOROLA SOLUTIONS, INC COM 620076307   1,468,000 5,004 SH   SOLE   0 0 5,004
NATIONAL FUEL GAS CO COM 636180101   219,000 4,268 SH   SOLE   0 0 4,268
NESTLE SA REG ADR COM 641069406   301,000 2,503 SH   SOLE   0 0 2,503
NEXTERA ENERGY COM 65339F101   8,218,000 110,759 SH   SOLE   0 0 110,759
NIKE INC CLASS B COM 654106103   354,000 3,207 SH   SOLE   0 0 3,207
NORFOLK SOUTHERN CORP COM 655844108   359,000 1,584 SH   SOLE   0 0 1,584
NORTHERN TRUST CORP COM 665859104   771,000 10,400 SH   SOLE   0 0 10,400
NORTHROP GRUMMAN CORP COM 666807102   376,000 825 SH   SOLE   0 0 825
NVIDIA CORP COM 67066G104   3,239,000 7,657 SH   SOLE   0 0 7,657
ORACLE CORP COM 68389X105   931,000 7,820 SH   SOLE   0 0 7,820
OTIS WORLDWIDE INC COM 68902V107   652,000 7,321 SH   SOLE   0 0 7,321
PEPSICO INCORPORATED COM 713448108   17,471,000 94,325 SH   SOLE   0 0 94,325
PFIZER INCORPORATED COM 717081103   1,261,000 34,376 SH   SOLE   0 0 34,376
PHILIP MORRIS INTERNATIONAL COM 718172109   405,000 4,150 SH   SOLE   0 0 4,150
PHILLIPS 66 COM 718546104   222,000 2,325 SH   SOLE   0 0 2,325
PIONEER NAT RES CO COM 723787107   228,000 1,100 SH   SOLE   0 0 1,100
PNC FINANCIAL SERVICES GROUP COM 693475105   680,000 5,401 SH   SOLE   0 0 5,401
POWERSHARES QQQ TR ETF SERIES COM 73935A104   2,341,000 6,337 SH   SOLE   0 0 6,337
PROCTER & GAMBLE COMPANY COM 742718109   19,469,000 128,302 SH   SOLE   0 0 128,302
PUBLIC SERVICE ENTERPRISE GROU COM 744573106   303,000 4,840 SH   SOLE   0 0 4,840
RAYTHEON TECHNOLOGIES CORP COM 75513E101   8,683,000 88,638 SH   SOLE   0 0 88,638
SALESFORCE.COM INC COM 79466L302   203,000 962 SH   SOLE   0 0 962
SAUL CENTERS INC. COM 804395101   236,000 6,401 SH   SOLE   0 0 6,401
SELECT SECTOR SPDR TR UTILITIE COM 81369Y886   245,000 3,750 SH   SOLE   0 0 3,750
SMUCKER J.M. CO COM 832696405   769,000 5,206 SH   SOLE   0 0 5,206
SOUTHERN COMPANY (THE) COM 842587107   3,115,000 44,343 SH   SOLE   0 0 44,343
SPDR S&P 500 ETF COM 78462F103   443,000 1,000 SH   SOLE   0 0 1,000
SUMMIT FINANCIAL GROUP COM 86606G101   270,000 13,069 SH   SOLE   0 0 13,069
SYSCO CORPORATION COM 871829107   1,232,000 16,603 SH   SOLE   0 0 16,603
T ROWE PRICE GROUP INC. COM 74144T108   10,835,000 96,725 SH   SOLE   0 0 96,725
TARGET CORP COM 87612E106   705,000 5,345 SH   SOLE   0 0 5,345
TESLA MOTORS INC COM 88160R101   1,274,000 4,867 SH   SOLE   0 0 4,867
TEXAS INSTRUMENTS COM 882508104   1,397,000 7,758 SH   SOLE   0 0 7,758
THE TJX COMPANIES COM 872540109   536,000 6,324 SH   SOLE   0 0 6,324
THE TRAVELERS COS INC COM 89417E109   704,000 4,054 SH   SOLE   0 0 4,054
THERMO FISHER SCIENTIFIC COM 883556102   538,000 1,031 SH   SOLE   0 0 1,031
TRUIST FINANCIAL CORP COM 89832Q109   282,000 9,305 SH   SOLE   0 0 9,305
UDR INC COM 902653104   832,000 19,371 SH   SOLE   0 0 19,371
UNILEVER PLC SPONS ADR COM 904767704   250,000 4,800 SH   SOLE   0 0 4,800
UNION PACIFIC CORP COM 907818108   6,741,000 32,944 SH   SOLE   0 0 32,944
UNITED HEALTHCARE CORP COM 91324P102   11,405,000 23,729 SH   SOLE   0 0 23,729
UNITED PARCEL SERVICE INC CL B COM 911312106   264,000 1,471 SH   SOLE   0 0 1,471
VANGUARD EMERGING MARKETS ETF COM 922042858   552,000 13,567 SH   SOLE   0 0 13,567
VANGUARD FTSE DEVELOPED MARKET COM 921943858   1,012,000 21,906 SH   SOLE   0 0 21,906
VANGUARD INFORMATION TECHNOLOG COM 92204A702   85,914,000 194,305 SH   SOLE   0 0 194,305
VANGUARD MID CAP ETF COM 922908629   7,729,000 35,108 SH   SOLE   0 0 35,108
VANGUARD REIT ETF COM 922908553   1,785,000 21,361 SH   SOLE   0 0 21,361
VANGUARD S&P ETF COM 922908363   998,000 2,450 SH   SOLE   0 0 2,450
VANGUARD SMALL CAP ETF COM 922908751   5,677,000 28,542 SH   SOLE   0 0 28,542
VANGUARD TOTAL STOCK MARKET COM 922908769   5,448,000 24,730 SH   SOLE   0 0 24,730
VERIZON COMMUNICATIONS COM 92343V104   2,781,000 74,783 SH   SOLE   0 0 74,783
VESTAS WIND SYS UK ADR COM 925458101   170,000 19,355 SH   SOLE   0 0 19,355
VISA INC CLASS A COM 92826C839   14,109,000 59,412 SH   SOLE   0 0 59,412
VULCAN MATERIALS CO COM 929160109   563,000 2,499 SH   SOLE   0 0 2,499
WAL-MART STORES INC COM 931142103   1,727,000 10,985 SH   SOLE   0 0 10,985
WALGREENS BOOTS ALLIANCE, INC. COM 931427108   330,000 11,600 SH   SOLE   0 0 11,600
WALT DISNEY COMPANY COM 254687106   7,379,000 82,654 SH   SOLE   0 0 82,654
WASTE CONNECTIONS INC COM 94106B101   272,000 1,900 SH   SOLE   0 0 1,900
WASTE MANAGEMENT INC. COM 94106L109   289,000 1,666 SH   SOLE   0 0 1,666
WELLS FARGO & CO. NEW COM 949746101   4,162,000 97,516 SH   SOLE   0 0 97,516
WEYERHAEUSER CO COM 962166104   236,000 7,037 SH   SOLE   0 0 7,037
WHITE MOUNTAINS INS. COM G9618E107   276,000 199 SH   SOLE   0 0 199
YUM BRANDS INC COM 988498101   286,000 2,066 SH   SOLE   0 0 2,066
ZIMMER BIOMET HOLDINGS INC. COM 98956P102   242,000 1,665 SH   SOLE   0 0 1,665