President Franklin D. Roosevelt was a known stamp collector and OSS head William “Wild Bill” Donovan sent the president some propaganda stamps printed with Himmler (produced by the British) and Hitler on them. A thank you letter for these stamps from FDR to Donovan still survives. After President Roosevelt’s death in 1946, his family auctioned his stamp collection, including some of the forged Operation Cornflakes stamps. For the first time, American forgery of German stamps was made public.
On some stamps, the words “Deutsches Reich” (German Empire) were changed to “Futsches Reich” (ruined empire) and Hitler’s profile had a skull overlaid on it.
In a series of postcards from a fictitious organization called "Ring der Kriegermütter" (War Mothers Group), handwritten postcards from lonely mothers were made to seem as if they wished their sons would desert their military positions and come home. One such postcard read in German:
After five years of struggle against overwhelming enemy power, you have done more than your duty. Today, the war is lost and the enemy is within our country! We are abandoned and helpless. Do not leave your mothers alone in the hour of danger! Come home!!! The mothers are your nearest and dearest!