Picture Hoaxes

From the website:

The picture (above) was widely printed in newspapers throughout the 1930s. It was represented as being a snapshot of Adolf Hitler as a baby. Sometime in 1937 Mrs. Harriet Downs, of Westport, Conn., noticed the image in a magazine and recognized it as an altered baby photo of her own son, John May Warren. The original, unretouched picture is shown on the right. It is not known how the hoaxer obtained the original picture.
More hoaxes here.