Massicotte Albums (Montreal streets 1870-1920), Bibliothèque et Archives nationales du Québec
CN Images of Canada Gallery, images of agriculture, aviation, railways, marine, natural resources, leisure, military, immigrants, trucking, telecommunications, buildings and bridges
Dead Fred
Digital Public Library of America
Historical Photographs of BC and Yukon, Vancouver Public Library
Images of Quebec (posters, postcards, stamps, photos), Bibliothèque et Archives nationales du Québec
Library of Congress
Notman Photographic Archives, McCord Museum
Winnipeg in FOCUS
Dating photos
Sears Roebuck & Co catalogue, 1918
Vintage hats, Minnesota Historical Society
Flickr
Archives of Ontario
Bibliothèque et Archives nationales du Québec
City of Vancouver Archives
Halifax Municipal Archives
Library and Archives Canada
Manitoba Archives
McGill University
Montreal Archives
Nova Scotia Archives
Provincial Archives of Alberta
Ryerson University Archives & Special Collections
Toronto Archives
Toronto Public Library
University of Manitoba Archives and Special Collections
Watermarking photos
uMarkOnline