INFORMATION HOLDINGS INC

Q: Sep 30 2004

Q: Jun 30 2004

Q: Mar 31 2004

FY: Dec 31 2003

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

FY: Dec 31 2002

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

Q: Mar 31 2000

FY: Dec 31 1999

Other Events

9.01

8.01,9.01

2.02,9.01

8.01,9.01

5,7

12,7

5,7

Other events

12,7

12,7

Acquisition or disposition of assets

5,7

2,7

12,7

7

2,7

5

5,7

5,7

Certification of termination of registration of a class of securities (Section 12(b))

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement with Pricing Information

No description available

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement with Pricing Information

Amended Initial Registration Statement

Registration of Securities on Exchange

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

WESTFIELD CAPITAL MANAGEMENT CO LLC

SLAINE MASON P

WARBURG PINCUS & CO

PAYSON MARTIN D

LAPIDUS SIDNEY

DANZIGER MICHAEL

HAAS DAVID R

Jarrett Keith B

VOGELSTEIN JOHN

NADLER JAY

SLAINE MASON P

CHIPPARI VINCENT A

VIDETTO DANIEL

WARBURG PINCUS & CO;WARBURG PINCUS LLC;WARBURG PINCUS VENTURES LP

HAAS DAVID R

WESTFIELD CAPITAL MANAGEMENT CO LLC

WESTFIELD CAPITAL MANAGEMENT CO LLC

BAMCO INC /NY/

THOMSON CORP /CAN/

THOMSON CORP /CAN/

Notification of the removal from listing and registration of matured redeemed or retired securities