WYOMING RODEO oil on canvas 37H by 48W Frank Mason

The picture has something of this: people, cavalry, seated, man, mammal, group, competition, wear, motion, cattle, lid, recreation, weapon, veil, cowman, courage, herder, action energy, skirmish.
Perhaps it’s a painting of a man riding on the back of a bull in the middle of a field with other men on the other side of the field.