Our good friend and aviation photographer extraordinaire, John Slemp, reports that the Goodyear Aviation Tire calendar for 2011 is now available, featuring a 1941 Waco ZPF-7 John shot at last year’s AirVenture in Oshkosh. Calendars are $5, plus shipping. Call 866-370-4271 for more information. Rather have John’s photo as a free download? You can do that as well, by clicking here.