This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following: 1. it was subject to Crown copyright and was first published more than 50 years ago, or it was not subject to Crown copyright, and 2. it is a photograph that was created prior to January 1, 1949, or 3. the creator died prior to January 1, 1972. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.  Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years. العربية ∙ বাংলা ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ suomi ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ português ∙ português do Brasil ∙ sicilianu ∙ slovenščina ∙ 简体中文 ∙ 繁體中文 ∙ +/−

http://commons.wikimedia.org/wiki/Commons:Copyright_rules_by_territory#Canada

Canada - All photographs (except those subject to Crown Copyright, for which see below) taken before 1 January, 1949 are in the public domain.

For works from after that time, or non-photographs, the Copyright Act states a copyright subsists for the life of the author plus 50 years following the end of the calendar year of death (section 6). If the work is anonymous or pseudonymous then the copyright lasts either 50 years following publication or 75 years after the making of the work, whichever is earlier (section 6.1), provided the authorship does not become known in that timeframe.

Works subject to Crown Copyright enter the public domain 50 years after publication, except for certain very rare exceptions (see COM:CCC).