A mural on the side of of the O'Fallon Museum in Baker Montana. Baker is in Fallon, not O'Fallon, County Montana, so presumably the "O" was dropped off of the name of Benjamin O'Fallon, after whom the county was named, at some point when Montana chose to honor the early Indian Agent and nephew of William Clark with a county name.
The building was originally the county jail and was built in 1916.