The quality of the image/scan made the serial of this aircraft unreadable. The 540 was one of several slab-sided bombers developed in France before World War II. Called the Flying Coffin by Spanish Republicans, it was relegated to the colonies and second-line duties by the time the war started. Photo from: National Archives at College Park, Maryland

Commander's aircraft of Torpedo and Bombing Squadron 2B, assigned to the carrier Saratoga circa 1929-1930. The Great Lakes TG-1 was a version of the Martin T4M, so designated because Martin had sold its Cleveland factory to the Great Lakes Aircraft Company. Photo by: Joseph Haase / San Diego Air & Space Museum