Kitty and Girl on Beach, c. 1960's by Margaret Keane, glued to cardboard in basements.
Popular in the 1960's big eyed puppies, kitties and children could be found tacked to bedroom walls and in this case on puzzles from Woolworth. These works were painted by Margaret Keane whose husband originally claimed to be the artist. It eventually came down to a “paint off” between the two. The story is captured in the movie Big Eyes.