Author: As I said, it is the back cover of a book. Even if I had the book - which I don't -, I doubt it would have had a signature. I mentioned the publisher above. The picture must be 70 years old; the guy it represents died in 1972.
Credits: It is a scan of the back cover of a book published (PROBABLY!) in 1939, "At Your Command", by "Snellgrove Publications", New York; it represents the author of that book at age 34; I found it embedded in an unsigned pdf-file which contained a collection of this author's lectures. He died in 1972 and I'm trying to make you accept it in order to place it in his data box.
Licence: Public domain
