Library of Congress
Loc: American Memory: Touring Turn of the Century America
This collection contains thousands of photographs from the Detroit Publishing Company and gives viewers the opportunity to explore America from the period of 1880 to 1920. Images include rural America, city life, men and women at work,...
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Denver Public Library: History of the American West
This massive archive holds more than 30,000 photographs detailing life in the American West from 1860 to 1940. Easy to use it can be searched by key word, topic,or a name index.