For 70 years, Fred Lyon has been capturing the essence of San Francisco in stunning black and white photographs. Selected from his book San Francisco: Portrait of a City 1940-1960, the 12 different 5 × 6¼-inch blank notecards (each with a white envelope) range in style from film noir to nostalgic, with views of Chinatown, Alcatraz, and the Golden Gate Bridge, as well as the city's cable cars and herring fishermen.