This is a photo published in the book "Flying Saucers Have Landed", published in 1952, I think. I found it in a local library when I was looking for information about UFOs (I was 13 at the time). The book is partially the story of George Adamski's supposed contacts with Venusian saucer pilots. He has long been discredited, but the apparently phony photos he published were well-done enough to get me very excited as a teen.
Thanks to Schlock Puppet