(University of Western Ontario, War, Memory and Popular Culture Archives, accessed via WartimeCanada.ca.)
The English declaration is transcribed in full.
THE CANADA GAZETTE
OTTAWA, SUNDAY, SEPTEMBER 10, 1939
CANADA
A PROCLAMATION
WHEREAS by and with the advice of Our Privy Council for Canada We have signified Our Approval of the issue of a Proclamation in the Canada Gazette declaring that a State of War with the German Reich exists and has existed in Our Dominion
of Canada as and from the tenth day of September 1939;
NOW THEREFORE We do hereby Declare and Proclaim that a State of War with the German Reich exists and has existed in Our Dominion of Canada as and from the tenth day of September, 1939:
OF ALL WHICH Our Loving Subjects and all others whom these Presents may concern, are hereby required to take notice and govern themselves accordingly.
By Command,
W.L. MACKENZIE KING
Prime Minister of Canada.