Below is a photograph that appeared in a collection that was sent to the U.S. government by Soviet affiliated Poles [opposed to their adversaries, the then-exiled Polish government] at some point prior to December 30, 1942, and is now available to be downloaded from the Franklin D. Roosevelt Presidential Library and Museum in New York.
The photo purportedly shows the bodies of Jews who electrocuted in a Nazi death camp [undoubtedly Belzec] which have been loaded onto a truck or cart ready to be taken to a factory to be made into soap or oil.
The very same photograph is available on the website of the Ghetto Fighters' House museum in Israel, but this time it's claimed the photo shows a Soviet soldier standing next to a wagon full of corpses found inside a liberated Nazi camp:
Both captions are obviously fraudulent. The photo was passed to the Americans before the end of 1942, and therefore could not show the scene inside any German camp liberated by the Soviets, as they didn't begin to liberate camps until after the war turned in their favour following the Battle of Stalingrad. The story of the electrocution death chamber at Belzec was abandoned almost immediately after the war, as were claims that soap was manufactured from the bodies of the camp's victims; even if we consider for a moment that argument about the cause of death is irrelevant, no one would seriously suggest that an active-duty Soviet soldier could have been photographed with a cart load of corpses in any of the Action Reinhardt camps during late 1942.
The photo possibly shows the corpses of Soviet prisoners of war, which would mean the Soviet-Poles who forwarded the photograph to the U.S. in 1942 deliberately mislabelled a recent photograph of genuine suffering in a German-run PoW camp. Or, perhaps, their deceit was even greater, and the photo shows Holodomor victims in the early 1930s; the soldier is certainly wearing a coat and hat similar to those worn by Red Army troops at that time.
Over at Holocaust Controversies, Roberto Muehlenkamp published this photograph with the GFH's caption as proof of German atrocities during WW2 (see photo 2.107):