This was a B-17G air tanker (USAAF 44-83542) operated by Aero Union. It crashed on July 12,1971 near Benson, AZ. These remains were the basis for the static display B-17 42-37994 "Piccadilly Express" at Fantasy of Flight at Polk, FL.
Built as 44-85784, it has recently finished service with the French IGN and whose registration of F-BGSR can still be seen. It never made it back to the States and today still resides at Duxford as G-BEDF. More commonly photographed as "Sally B"/"Memphis Belle".
Also known as "Swamp Ghost" this bomber crash landed in a New Guinea swamp in 1942. There it remained until its recovery in 2006. Eventually it would go to the Planes of Fame Museum in California and finally it has ended up on display at the Pacific Aviation Museum in Hawaii. 64 years in 5 feet of water has left its mark on the bomber.
The ninth B-17E was fitted with Allison V-1710 inline engines by Lockheed Vega. The resulting XB-38 was faster than the B-17 but its service ceiling was lower. The single XB-38 was lost on its ninth flight on 16 June 1943 when the number 3 engine caught fire and the crew bailed out. Photo from: Nederlands Instituut voor Militaire Historie