View of exhibit for Keystone Grease, manufactured by Keystone Lubricating Company, during the 1909 Boston Auto Show at Mechanics Hall in Boston, Massachusetts. Exhibit has cloth-draped table with oil cans; "Keystone Grease, the world's greatest lubricant." Stamped on back: "Spooner & Wells, Inc., photographers, telephones 3472-3473 Columbus, 1931 Broadway, New York." Handwritten on back: "Shows--Boston Auto Show, 1909."
