United States, 1912 (July 17-18) Driving Park Aviation Meet, Benton Harbor, Mich. 1¢ McKinley postal card postmarked "Benton Harbor, Mich., Fair Ground Station, July 18, 1912", with Aero Mail Club membership notice on reverse; minor card crease at left, otherwise Very Fine. AAMC No. 40. Scott No. UX19  Estimate $75 - 100. $0 (Image)