View of a man in the motorboat "Challenger." Printed on front: "Copyrighted 1905." Typed on back: "Smith & Mabley 'Challenger.' Simplex powered, Clinton H. Crane, designer. Challenger was Smith & Mabley's first Harmsworth Trophy contender in 1904. Occasionally fast but always erratic, she was sold to a private party and retired after one season. Clinton Crane used his experience with Challenger to develop Dixie." Handwritten on back: "Boats and boating."