Engine builder Hans L. Rasmussen, of Niles, MI. made a 5-cylinder radial engine with four valves on each cylinder. It gave 65 HP and was built in 1934.

From Appendix 12: Rasmussen also made a water-cooled, horizontally-opposed, two-cylinder engine. It was known as Type 3, and it gave 12 HP and weighed 23 Kg.

“Rasmussen Type 3 engine”