773d Bombardment Squadron Douglas Long Beach B-17G-50-DL Fortress 44-6261.   Aircraft Lost on mission to Vienna, Austria, 13 October 1944.
United States Army Air Forces
1944
"History and Units of the United States Air Forces In Europe", CD-ROM compiled by GHJ Scharringa, European Aviation Histoical Society, 2004. Image source listed as United States Air Force Historical Research Agency