The artificial collection contains over 5,000 photomechanical postcards of San Francisco, California collected by the San
Francisco History Center, San Francisco Public Library. The postcards range in date from the turn of the 20th century to 1990s.
Events depicted on the postcards include world expositions the Panama-Pacific International Exposition and the Golden Gate
International Exposition and the disaster 1906 Earthquake and Fire. Places represented are significant San Francisco buildings,
businesses, hotels and restaurants as well as many general views. Postcard publishers include by Edward H. Mitchell, Curt
Teich, Smith News Company, Pacific Novelty Company, Stanley A. Piltz Company, and Mike Roberts.