Central Mass Steam, Gas & Machinery Association’s 49th annual Yankee Engin-uity antique gas and steam engine/tractor show. Show will also include a flea market, antique machinery, antique vehicles, garden tractor pulls, music by The Cropdusters on Saturday evening, and a tractor parade. Food concessions on-site. Many events happening only on Saturday, so come early to see it all. Spectator parking is $10, membership is $15, flea market space is $40. Parking pass is valid for the entire weekend. Come on down and see working displays of the equipment that built America’s industry and agriculture.