Exhibit 99.1

Thomson Reuters Corporation

Suite 2706, Toronto Dominion Bank Tower

P.O. Box 24, Toronto-Dominion Centre

Toronto, Ontario M5K 1A1

Canada

Tel (416) 360-8700

February 24, 2010

British Columbia Securities Commission

Alberta Securities Commission

Saskatchewan Financial Services Commission

Manitoba Securities Commission

Ontario Securities Commission

Autorité des marchés financiers

New Brunswick Securities Commission

Nova Scotia Securities Commission

Registrar of Securities, Prince Edward Island

Superintendent of Securities, Newfoundland and Labrador

Registrar of Securities, Government of Yukon Territory

Registrar of Securities, Department of Justice, Government of Northwest Territories

Registrar of Securities, Government of Nunavut

Toronto Stock Exchange

CDS Clearing and Depository Services Inc.

The Depository Trust Company

Re:           Thomson Reuters – Notification of Meeting and Record Date

Ladies and Gentlemen,

Pursuant to National Instrument 54-101, Communication with Beneficial Owners of Securities of a Reporting Issuer (NI 54-101), we advise the following:

Date of Meeting	May 14, 2010
Record Date for Notice and Voting	March 31, 2010
Beneficial Ownership Determination Date	March 31, 2010
Class of Securities Entitled to Receive Notice of and Vote at the Meeting	Common Shares
Whether the Meeting is a Special Meeting (as defined by NI 54-101)	No
CUSIP	884903105

Sincerely,

/s/ Paula R. Monaghan

Paula R. Monaghan

Assistant Secretary