Panama-Pacific International Exposition 1915

"The Panama–Pacific International Exposition was a world's fair held in San Francisco, California, U.S., from February 20 to December 4, 1915. Its stated purpose was to celebrate the completion of the Panama Canal, but it was widely seen in the city as an opportunity to showcase its recovery from the 1906 earthquake. The fair was constructed on a 636 acre (1 sq. mi., 2.6 km2) site along the northern shore, between the Presidio and Fort Mason, now known as the Marina District. (Ref 3/9/2020 https://en.wikipedia.org/wiki/Panama–Pacific_International_Exposition