Dampier Oil Studies

I have two pieces of art. The image size is 7" by 10". They look like oil studies on canvas (unstretched). Both are framed and matted. The back of both paintings in covered with brown paper and on the paper is a glued on piece of paper that reads "Desert moods- painted near Winslow Arizona. W Dampier 11/25/42. This is written in pencil, and I have not removed the backing as this would destroy the signature.