Oil painting made by artist Bob Ross (1942-1995) for his television program The Joy of Painting (1983-1994.) The painting was painted for use in one of Ross’ books. It is based on a work painted on air during season 30, episode 13. Now in the National Museum of American History (at the Smithsonian) in Washington, DC (USA).

More info:

https://www.si.edu/object/painting-bob-ross-blue-ridge-falls:nmah_1934718

Edit to add: Ross himself said his work was not “fine art” but I think it’s good art and he made a lof people happy. If you don’t think it belongs here, maybe you want to explain why.

Source (with lots of other nice tidbits about the man): https://youtu.be/9N2o_bz3aG0