UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 27)

CDI Corp.

(Name of Issuer)

Common Stock, Par Value $.10 Per Share

(Title of Class of Securities)

125071 10 0

(CUSIP Number)

December 31, 2007

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

1	NAMES OF REPORTING PERSONS Lawrence C. Karlson and Barton J. Winokur, as Trustees of certain Trusts for the benefit of Walter R. Garrison’s children, and Donald W. Garrison, Lawrence C. Karlson, John C. Strayer and Barton J. Winokur, as Trustees of certain other trusts for the benefit of Walter R. Garrison’s children
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a)  ¨ (b)  x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             United States of America, as to all Trustees

Number of   Shares   Beneficially   Owned by   Each   Reporting   Person   With	5    SOLE VOTING POWER             4,806,999
	6    SHARED VOTING POWER             Not applicable
	7    SOLE DISPOSITIVE POWER             4,806,999
	8    SHARED DISPOSITIVE POWER             Not applicable

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             4,806,999
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)             Not Applicable
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             23.6%
12	TYPE OF REPORTING PERSON (See Instructions)             OO

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SCHEDULE 13G FILED BY

Trustees of Various Trusts

for the Benefit of Walter R. Garrison’s Children

PURSUANT TO THE

SECURITIES EXCHANGE ACT OF 1934

Item 1	(a).	Name of Issuer:
		CDI Corp.
Item 1	(b).	Address of Issuer’s Principal Executive Offices:
		1717 Arch Street, 35th Floor, Philadelphia, PA 19103-2768
Item 2	(a).	Name of Person Filing:
		Lawrence C. Karlson and Barton J. Winokur, as Trustees of certain Trusts for the benefit of Walter R. Garrison’s children, and Donald W. Garrison, Lawrence C. Karlson, John C. Strayer and Barton J. Winokur, as Trustees of certain other trusts for the benefit of Walter R. Garrison’s children
Item 2	(b).	Address of Principal Business Office or, if none, Residence:
		c/o Arthur R. G. Solmssen, Jr., Esquire, Dechert LLP, Cira Centre, 2929 Arch Street, Philadelphia, PA 19104-2808
Item 2	(c).	Citizenship:
		United States of America, as to all Trustees
Item 2	(d).	Title of Class of Securities:
		Common Stock, $0.10 par value
Item 2	(e).	CUSIP Number:
		125071 10 0
Item 3.:	Not Applicable

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Item 4.	Ownership:
	As of December 31, 2007:
	(a)	Amount Beneficially Owned:
		4,806,999 shares
	(b)	Percent of Class:
		23.6%
	(c)	Number of shares as to which such person has:
		(i)	sole power to vote or direct the vote:
			4,806,999 shares
		(ii)	shared power to vote or direct the vote:
			0
		(iii)	sole power to dispose or direct the disposition of:
			same shares as 4(c)(i) above
		(iv)	shared power to dispose of:
			same shares as 4(c)(ii) above
Item 5.	Ownership of Five Percent or Less of a Class:
	Not applicable
Item 6.	Ownership of More than Five Percent on Behalf of Another Person:
	Not applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person:
	Not applicable
Item 8.	Identification and Classification of Members of the Group:
	Not applicable
Item 9.	Notice of Dissolution of Group:
	Not applicable
Item 10.	Certifications:
	Not applicable

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Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

February 6, 2008

Date

DONALD W. GARRISON

Donald W. Garrison, as a Trustee

LAWRENCE C. KARLSON

Lawrence C. Karlson, as a Trustee

JOHN C. STRAYER

John C. Strayer, as a Trustee

BARTON J. WINOKUR

Barton J. Winokur, as a Trustee

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