Jon Shirley (#12) leads Peter Gidding (#31) in a duel of pre-war Alfa Romeo Tipo B P3s. Photo: Walter PietrowiczMichael Casey-DiPleco, Walter PietrowiczVintage Racecar Gallery January 1, 2011 0SVRA U.S. Vintage Grand Prix Watkins Glen International, Watkins Glen, NY September 9–12, 2010 Access to the full article is limited to paid subscribers only. Our membership removes most ads, lets you enjoy unlimited access to all our premium content, and offers you awesome discounts on partner products. Enjoy our premium content. See Membership Options