Press Release Details

Webcast Alert: The Thomson Corporation Presents at the Merrill Lynch Advertising/Marketing, Education & Information Conference - March 9, 2005

March 2, 2005 at 8:32 AM EST

STAMFORD, Conn., March 2 /PRNewswire-FirstCall/ -- The Thomson Corporation (NYSE: TOC; TSX: TOC) announces the following Webcast:

     What:      Richard J. Harrington, President and CEO, will present at the
                Merrill Lynch Advertising/Marketing, Education & Information
                Conference

     When:      March 9, 2005 @ 9:30 a.m. EST

     Where:     http://www.thomson.com

     How:       Live over the Internet -- To participate in the webcast, visit
                http://www.thomson.com and click on "Investors" at the top of
                the page, then Executive Presentations on 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 38,000 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/mp10/default.aspx 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-                             03/02/2005
    /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/
    /Web site:  http://www.thomson.com /
    (TOC TOC.)

CO:  Thomson Corporation; Merrill Lynch
ST:  Connecticut, New York
IN:  CPR FIN
SU:  CCA

GS
-- NYW010 --
4945 03/02/2005 08:30 EST http://www.prnewswire.com