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

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): ~~April~~ 22August 12, 2004

INFORMATION HOLDINGS INC. (Exact name of registrant as specified in its charter)

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation)		1-14371 (Commission File Number)		06-1518007 (IRS Employer Identification No.)
2777 Summer Street, Suite 602, Stamford, CT 06905 (Address of principal executive offices) (Zip Code)

Delaware		1-14371		06-1518007
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

(203) 961-9106
(Registrant's telephone number, including area code)

~~2777~~ ~~Summer~~ ~~Street,~~ Item ~~Suite~~5. Other ~~602,~~Events ~~Stamford,~~and CTRegulation ~~06905~~FD ~~(Address of principal executive offices) (Zip Code)~~Disclosure.

On August 12, 2004, Information Holdings Inc., a Delaware corporation (~~203~~"IHI"), ~~961-9106~~and The Thomson Corporation, an Ontario, Canada corporation (~~Registrant’~~"Thomson"), issued a press release announcing that they have received a request for additional information and documentary material from the Department of Justice (the "DOJ") under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 following the DOJ's ~~telephone~~review ~~number,~~of ~~including~~the ~~area~~proposed ~~code~~acquisition of IHI by Thomson (the "Press Release").

~~Item~~ The Press 7Release is attached hereto as Exhibit 99.1 ~~FINANCIAL~~and ~~STATEMENTS~~is ~~AND~~incorporated ~~EXHIBITS~~herein by reference. The foregoing is qualified in its entirety by reference to such document.

~~(a) Not applicable.~~2

~~(b) Not~~ ~~applicable~~ Item 7. Financial Statement and Exhibits.

(c)

Exhibits.

99.1: Press Release issued by Thomson and IHI on August 12, 2004.

~~(c) Exhibits.~~3

~~The~~ ~~following~~ ~~exhibit is part of this report:~~ SIGNATURE

Exhibit No.		Description
99.1*		Copy of the Company’s press release, issued April 22, 2004.

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

* Exhibit 99.1 is being furnished to the Securities and Exchange Commission ("SEC") pursuant to Item 12 and is not being "filed" with the SEC. Therefore, this Exhibit 99.1 is not incorporated by reference in any of the Company’s other SEC filings.

~~Item 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION.~~4

On ~~April 22, 2004, Information Holdings Inc. (the “Company”) issued a press release announcing~~ ~~the~~ ~~Company’s preliminary results for its quarter ended March 31, 2004. A copy of this press release is attached~~ ~~hereto~~EXHIBIT ~~as Exhibit 99.1 to this Form 8-K. This Form 8-K and Exhibit 99.1 hereto are furnished pursuant to Item 12 of Form 8-K and are therefore not considered “filed” with the SEC.~~INDEX

Exhibit		Description
99.1		Press Release issued by The Thomson Corporation and Information Holdings Inc. on August 12, 2004.

~~SIGNATURE~~5

~~Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.~~QuickLinks

Item 5. Other Events and Regulation FD Disclosure.

Item 7. Financial Statement and Exhibits.

SIGNATURE
EXHIBIT INDEX

	INFORMATION HOLDINGS INC.
Date: April 22, 2004
	By:	/s/ Vincent A. Chippari
		Name:	Vincent A. Chippari
		Title:	Executive Vice President and Chief Financial Officer

Exhibit No.		Description
99.1*		Copy of the Company’s press release, issued April 22, 2004.

* Exhibit 99.1 is being furnished to the SEC pursuant to Item 12 and is not being "filed" with the SEC. Therefore, this Exhibit 99.1 is not incorporated by reference in any of the Company’s other SEC filings.

INFORMATION HOLDINGS INC.

Date: August 12, 2004

/s/ VINCENT A. CHIPPARI

Vincent A. Chippari

Executive Vice President and Chief Financial Officer

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