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Special Libraries Association Honors Dialog for "Extraordinary Support"

NASHVILLE, Tenn., USA (June 7, 2004) — Dialog, a Thomson (NYSE: TOC; TSX: TOC) business and a leading worldwide provider of online-based information services and integrated information solutions, and the Special Libraries Association (SLA) announced today that Dialog has been awarded membership in SLA's prestigious John Cotton Dana Circle.

SLA made the award presentation yesterday during its annual conference, being held here June 5 – 10, 2004. Dialog is serving as a Major Conference Partner for SLA's Annual Conference for the third year in a row.

Membership in SLA's John Cotton Dana Circle, named for the association's founder, is reserved for those companies that demonstrate "extraordinary support" for the group and the information profession for five or more years.

Janice R. Lachance, SLA executive director, said, "We are continually looking for new ways to expand the value we provide our members. Our partnership with Dialog will bring great benefits for SLA members and provide additional resources to support our programs and events."

Among other activities in support of the information profession, Dialog offers its Quantum² program to provide professional training and career development support to librarians and others worldwide. Dialog also annually recognizes current and potential professional leaders through its InfoStars Awards and Roger K. Summit Scholarships. (Roger Summit was the founder of Dialog and today serves as its chairman emeritus.)

"One of our primary goals is to support learning and development opportunities for information professionals through our support of SLA, our Quantum² leadership development program and the Dialog Graduate Education Program," said Libby Trudell, Dialog senior vice president, information professional development. "Becoming a member of the John Cotton Dana Circle is very gratifying for us."

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About Dialog and The Thomson Corporation
Dialog, a pioneer in developing the technology behind electronic information retrieval, is the world leader in providing online-based information services to organizations seeking competitive advantages in such fields as business, science, engineering, finance and law.

Today, the online services provided by Dialog — offered through the Dialog®, Dialog Profound®, Dialog DataStar™, Dialog NewsEdge® and Dialog Intelliscope^SM brands — give users the ability to precisely retrieve data from more than 1.4 billion unique records, accessible via the Internet or through delivery to enterprise intranets. Searchable content includes articles and reports from thousands of real-time news feeds, newspapers, broadcast transcripts and trade publications, plus research reports and analyst notes providing support for financial decision-making, as well as in-depth repositories of scientific and technical data, patents, trademarks and other intellectual property data. Information professionals and end-users at business, professional and government organizations in more than 100 countries prize Dialog services for their depth and breadth of content, precision searching and speed.

Based in Cary, N.C., USA, Dialog has operations in 31 other countries. Dialog (www.dialog.com) is a business of The Thomson Corporation (NYSE: TOC; TSX: TOC). With 2003 revenues of US$7.6 billion, Thomson (www.thomson.com) is a global leader in providing integrated information solutions to business and professional customers.

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All designated trademarks used herein are the property of The Dialog Corporation or its subsidiaries. Registered marks are registered by The Dialog Corporation or its subsidiaries with the U.S. Patent and Trademark Office. All other marks are trademarks or registered trademarks of their respective owners.

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