One of the paintings on the wall of the apartment was in 'Speedway'

I was watching the movie "Speedway" this afternoon in which Bill Bixby appeared with Elvis Presley, and noticed that in the trailer their two characters shared was a painting which later appeared regularly on the wall of the Courtship of Eddie's Father set. Does anyone know if this was a personal possession of his? Perhaps a souvenir he kept from the movie? I've noticed other interesting items in the T.V. series, e.g. the book "Magic In Your Pocket"on the desk in Tom Corbett's bedroom, which suggest his personal taste and interests were strongly reflected in the furnishing of the set.