Press Release Details

The Thomson Corporation to Webcast 2007 Investor Day -- October 9, 2007

October 5, 2007 at 9:26 AM EDT

STAMFORD, Conn., Oct. 5 /PRNewswire-FirstCall/ -- The Thomson Corporation (NYSE: TOC; TSX: TOC) today announced that it will webcast the Corporation's 2007 Investor Day executive presentations and Q&A on October 9, 2007.

    What:      The Thomson Corporation Investor Day 2007

    When:      Tuesday, October 9, 2007 @ 8:30 a.m. (UKT)

    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.

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

               Fred Hawrysh, Global Director, External Communications
               203-539-8314, fred.hawrysh@thomson.com

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

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

    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 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-                             10/05/2007
    /CONTACT:  Frank Golden, Vice President, Investor Relations,
+1-203-539-8470, frank.golden@thomson.com; or Fred Hawrysh, Global Director,
External Communications, +1-203-539-8314, fred.hawrysh@thomson.com, both of
The Thomson Corporation/
    /Photo:  NewsCom: 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/
    (TOC TOC.)

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

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3364 10/05/2007 09:24 EDT http://www.prnewswire.com