File:File-The Canadian Light Horse going into action at Vimy Ridge, April 1917 La cavalerie légère canadienne avance sur la crête de Vimy, avril 1917 A001111.jpg
William Ivor Castle. Canada. Dept. of National Defence. Library and Archives Canada, PA-001111 / William Ivor Castle. Canada. Ministère de la défense nationale. Bibliothèque et Archives Canada, PA-001111
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This image is available from Library and Archives Canada under the reproduction reference number a001111 and under the MIKAN ID number 3194785
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