Webcast Alert: The Thomson Corporation to Report Second-Quarter 2007 Results

The Thomson Corporation (NYSE: TOC; TSX: TOC) announces the following Webcast:

Who:
President and CEO Richard J. Harrington and Executive Vice President and CFO Robert D. Daleo

What:
Presentation and Discussion of Second-Quarter 2007 Results for The Thomson Corporation

When:
Thursday, July 26, 2007 @ 8:30 a.m. ET

Where:
www.thomson.com

How:
Live over the Internet - To participate in the webcast, visit www.thomson.com and click on “Investor Relations” at the top of the page and then “Executive Presentations” at the left side of the page.

The Webcast will be archived at www.thomson.com.

The Thomson Corporation
The Thomson Corporation (www.thomson.com) is a global leader in providing essential electronic workflow solutions to business and professional customers. With operational headquarters in Stamford, Conn., Thomson provides value-added information, software tools and applications to professionals in the fields of law, tax, accounting, financial services, scientific research and healthcare. The Corporation’s common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).

(Minimum Requirements to listen to broadcast:
The Windows Media Player software, downloadable free from Microsoft.com and at least a 28.8Kbps connection to the Internet. If you experience problems listening to the broadcast, send an email to webcastsupport@tfprn.com.)