Panama-Pacific International Exposition at San Francisco (1915 World's Fair)

From Kook Science

"Ground Plan of the International Exhibition" (1915)

The Panama-Pacific International Exposition, or San Francisco World's Fair of 1915, was a World's Fair held at San Francisco, California from 20 February through 4 December 1915, the event based around celebrations of the completion of the Panama Canal in 1914. It featured pavilions sponsored by most of the American states and 24 other countries.