View of magnetos in Bosch Magneto Company display at trade show. Desk with literature in foreground. Signs on back wall for Bosch Magneto Company, the Royal Equipment Co., Truffault-Hartford shock absorber, and the Star Rubber Co. Stamped on back: "Spooner & Wells, Inc., photographers, telephone North 1745. 1231 Woodward Ave., Detroit, Mich. Detroit, 1231 Woodward, New York, 1931 Broadway." Handwritten on back: "Machinery--Electrical. Bosch Magneto, 1911."