Press Release Details

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

July 20, 2005 at 9:31 AM EDT

STAMFORD, Conn. and TORONTO, July 20 /PRNewswire-FirstCall/ -- 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 Chief Financial
               Officer Robert D. Daleo

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

    When:      July 27, 2005 @ 10:30 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), 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  The Thomson Corporation
    -0-                             07/20/2005
    /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 The
Thomson Corporation/
    /Photo:  http://www.newscom.com/cgi-bin/prnh/20020227/NYW014LOGO /
    /Web site:  http://www.thomson.com /
    (TOC TOC.)

CO:  The Thomson Corporation
ST:  Connecticut, Ontario
IN:  FIN CPR STW
SU:  CCA

PA
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9341 07/20/2005 09:30 EDT http://www.prnewswire.com