Exhibit 21.1

SUBSIDIARIES OF

PROQUEST COMPANY (Delaware)

March 2003

ProQuest Company subsidiaries are 100% owned by

ProQuest Company unless otherwise indicated

ProQuest Company—Subsidiary	Incorporation
ProQuest U.K. Holdings Limited (Formerly known as Bell & Howell A-V Limited. 1 share held by a director for ProQuest Company)	United Kingdom
-  Bell & Howell Information and Learning Limited (100% owned by ProQuest U.K. Holdings Limited)	United Kingdom
-  ProQuest Alison Limited     (100% owned by ProQuest U.K. Holdings Limited)	United Kingdom
-  ProQuest Alison, Gmbh     (100% owned by ProQuest Alison Limited)	Germany
-  ProQuest Alison, SARL (100% owned by ProQuest Alison Limited)	France
-  ProQuest Alison, SRL     (100% owned by ProQuest Alison Limited)	Spain
-  ProQuest Alison, SRL     (100% owned by ProQuest Alison Limited)	Italy
-  ProQuest Alison, Inc.     (100% owned by ProQuest Company)	United States
-  ProQuest Information and Learning Limited     (100% owned by ProQuest U.K Holdings)	United Kingdom
ProQuest Japan Company Limited	Japan
ProQuest Information Access Limited	Canada
ProQuest Business Solutions Inc. (Formerly known as Bell & Howell Publishing Services)	Delaware
OEConnection LLC (25% owned by ProQuest Business Solutions Inc.)	Delaware
ProQuest Information and Learning Company (Formerly known as Bell & Howell Information and Learning Company, UMI Company)	Delaware
-  Chadwyck-Healey Espana, SA     (100% owned by ProQuest Information and Learning Ltd.)	Spain
-  Softline Information, Inc.     (100% owned by ProQuest Information & Learning Company)	New Hampshire
-  Norman Ross Publishing, Inc.     (100% owned by ProQuest Information and Learning Company)	New York
-  Bigchalk, Inc.     (100% owned by ProQuest Information and Learning Company)	Delaware
-  homeworkcentral.com, Inc.     (100% owned by Bigchalk, Inc.)	Delaware
-  Mediaseek Technologies, Inc.     (100% owned by Bigchalk, Inc.)	Canada