Boeing 377 Stratocruiser N90943, Pan American World Airways Sovereign of the Skies, Published on October 15, 2013 in 16 October 1956Full resolution (768 × 624) Next → Boeing 377 Stratocruiser N90943, Pan American World Airways’ Sovereign of the Skies, seen over San francisco, circa 1947. (University of Washington Libraries Digital Collections, TRA0138)