Achelous and Hercules is a 1947 mural painting by Thomas Hart Benton. It depicts a bluejeans-wearing Hercules wrestling with the horns of a bull, a shape the protean river god Achelous was able to assume. The myth was one of the explanations offered by Greco-Roman mythology for the origin of the cornucopia, a symbol of agricultural abundance. Benton sets the scene during harvest time in the U.S. Midwest.

https://en.wikipedia.org/wiki/Achelous_and_Hercules