View of magnetos in C.F. Splitdorf exhibit during the 1910 Boston Auto Show at Mechanics Hall in Boston, Massachusetts. Room contains display case with magnetos; magneto with "Danger, hands off! 70000 volts" sign in background. "Splitdorf magneto" and "C.F. Splitdorf" signs in exhibit. Stamped on back: "Spooner & Wells, Inc., photographers, telephones 3472-3473 Columbus, 1931 Broadway, New York." Handwritten on back: "Shows--Boston Auto Show, 1910."