The California Clipper (NC-18602) was an American Boeing 314 long-range flying boat. This plane was in service with the Pan American Airways (PAA), and sported an American flag on its nose. In 1939, this plane, newly commissioned, was photographed over the San Francisco Bay by Clyde Sunderland. In the photo, the California Clipper was approaching the bay from the west, and had just passed over San Francisco. In the distance, the Golden Gate Bridge could be seen linking the Presidio to the Marin Headlands.