I think these are birch trees even though they might be aspen. Anyway, they are lovely and come from an old newspaper clipping with no date. The advertising on the flip side has a cafeteria ad and the blue plate special is an Italian spaghetti and meatball dinner with garlic toast for 74 cents. So, this image is most likely not in the public domain even though there is no artist’s signature. The newspaper probably owns the rights but I did eliminate the squirrel that formerly occupied the blank space in front. Use at your own risk.