Natural color postcard shows the entrance to the American Telephone and Telegraph Exhibit at the California Pacific International Exposition of 1935 held in San Diego's Balboa Park. The exhibit is said to have been set up in and around the southeast patio of the Palace of Photography (old Science and Education Building), of which the tower can be seen to the right of the California Tower in the center of the picture. Both buildings were built for the Panama-California Exposition of 1915. The California Tower was designed by architect Bertram Goodhue (1869-1924). The Palace of Photography (subsequently the Medical Arts Building and the Veterans of Foreign Wars Building, known to the Parks Department as Building 4) was razed in the 1960s.