Vintage postcard from the 1915 Panama-Pacific International Exposition (PPIE) held in San Francisco, California. This World's Fair celebrated the completion of the Panama Canal and the rebuilding of San Francisco following the 1906 earthquake. The exposition ran from February 20 to December 4, 1915, attracting nearly 19 million visitors to its spectacular Beaux-Arts pavilions, state buildings, and elaborate courtyards along San Francisco Bay.