The Thomson Corporation Completes Acquisition Of Quantitative Analytics, Inc.

STAMFORD, Conn., 03/02/2006, The Thomson Corporation (NYSE: TOC; TSX: TOC) today announced that it has completed the acquisition of Quantitative Analytics, Inc. (QAI), a leading provider of database integration and analysis solutions to the financial services industry. Today, QAI becomes a part of Thomson Financial’s Corporate Services, Investment Banking & Investment Management group.

“We are very pleased to welcome QAI to Thomson and are excited about the future prospects of our combined operations,” said Sharon Rowlands, president and chief executive officer of Thomson Financial. “We will now work to integrate QAI’s technology within our Thomson ONE framework, in order to provide our global Investment Management clients with integrated, multi-asset class workflow solutions that will ultimately help to improve their financial performance.”

About The Thomson Corporation
The Thomson Corporation (www.thomson.com ), with 2005 revenues of $8.70 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools and applications to more than 20 million users in the fields of law, tax, accounting, financial services, higher education, reference information, corporate e-learning and assessment, scientific research and healthcare. With operational headquarters in Stamford, Conn., Thomson has approximately 40,000 employees and provides services in approximately 130 countries. The Corporation’s common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).

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Kerri Shepherd

Manager, Public Relations

The Thomson Corporation

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