Press Release Details

Webcast Alert: The Thomson Corporation to Report First-Quarter 2005 Results

April 19, 2005 at 8:02 AM EDT

STAMFORD, Conn. and TORONTO, April 19 /PRNewswire-FirstCall/ -- The Thomson Corporation (NYSE: TOC; TSX: TOC) announces the following Webcast:

     Who:       President and CEO Richard J. Harrington and Chief Financial
                Officer Robert D. Daleo

     What:      Presentation and Discussion of First-Quarter 2005 Results for
                The Thomson Corporation

     When:      April 26, 2005 @ 11:00 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 the "Investors" tab
                located at the top 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), with 2004 revenues of $8.10 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).

(Minimum Requirements to listen to broadcast: The Windows Media Player software, downloadable free from http://www.microsoft.com/windows/windowsmedia/EN/default.asp 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  Thomson Corporation
    -0-                             04/19/2005
    /CONTACT:  Frank Golden, Vice President, Investor Relations,
+1-203-539-8470, frank.golden@thomson.com, or Jason Stewart, Vice President,
Media Relations, +1-203-539-8339, jason.stewart@thomson.com, both of Thomson
Corporation/
    /Web site: http://www.thomson.com /
    (TOC TOC.)

CO:  Thomson Corporation
ST:  New York
IN:  PUB FIN CPR STW
SU:  CCA

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