View of an air-cooled engine, designed by John Tjaarda. Stamped on front: "Mawen Motor Corporation, 500 Fifth Avenue, New York City." Stamped on back: "Mawen Motor Corporation, 500 Fifth Avenue, New York City." Typed on back: "No.: MS6/112 - folder 22. Subject: Engines--Automotive. Collection: MS6/ John Tjaarda Collection. Date: c.1935. Location: [blank]. Photographer: [blank]. Source: [blank]. I.D.: Air-cooled engine. Weight: 42 lbs., 100 h.p., 79 m.p.g."
