1950 ‘Waldo Genius in Orbit’ by Robert A Heinlein Paperback

1950 Waldo: Genius in Orbit Paperback, printed by Avon Books, New York, in 1950, written by Robert A. Heinlein, ‘First came the hairy apes, then came man, and then came WALDO, the next step in human evolution’, great condition, few slight scuffs to cover and a little water stain on the first few pages