1957 Corn Products Building

1950 Michigan and Adams

1977 photograph showing Islamabad's Marriot Hotel

A German U-boat sinks an Allied merchant vessel in the Atlantic Ocean in this 1915

A German seaplane is pictured after crashing in an unknown location, in this 1916

Jade Belt Bridge & Boat, Summer Palace, Peking, China 1924

1950 Michigan and Adams

1950 Michigan and Adams 1951

1920's Cincinnati

High-angle view of traffic and pedestrians using the Golden Gate Bridge, San Francisco, California, circa 1937

Golden Gate Bridge under construction with the Pylon #1 and the North and South Towers rising above Fort Point, San Francisco, California, April 1935.

employee test gas masks at the chemical development laboratory in Philadelphia in 1919

Construction of the Grand Coulee Dam March 1938

construction of the Golden Gate Bridge with men on the catwalks working on the cables, San Francisco, California, 1937. Alcatraz Island can be seen in the background

Canyon de Chelly panorama of valley from mountain in 1941,