Press Release Details

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

April 19, 2007 at 1:32 PM EDT

STAMFORD, Conn., April 19, 2007 - The Thomson Corporation (NYSE: TOC) (TSX: TOC) announces the following Webcast:

    (Logo: http://www.newscom.com/cgi-bin/prnh/20020227/NYW014LOGO )

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

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

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

    Where:     http://www.thomson.com

    How:       Live over the Internet - To participate in the webcast, visit
               http://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.

    Contacts:  Frank Golden, Vice President, Investor Relations
               203-539-8470, frank.golden@thomson.com

               Jason Stewart, Vice President, Media Relations
               203-539-8339, jason.stewart@thomson.com

    The Webcast will be archived at http://www.thomson.com.

    The Thomson Corporation

The Thomson Corporation (http://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 http://www.microsoft.com/windows/default.mspx 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.)

SOURCE  The Thomson Corporation
    -0-                             04/19/2007 P
    /PRNewswire-Firstcall -- April 19/
    /Photo:  Logo: http://www.newscom.com/cgi-bin/prnh/20020227/NYW014LOGO
             AP Archive:  http://photoarchive.ap.org
             PRN Photo Desk, photodesk@prnewswire.com /
    /Web site:  http://www.thomson.com
                http://www.microsoft.com/windows/default.mspx /
    (TOC)

CO:  The Thomson Corporation
ST:  Connecticut
IN:  CPR STW WRK
SU:  MAV CCA

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