View of trunnion brackets in bins in machine shop at Plant 1, GMC Truck & Coach plant. Printed on front: "GMC Truck & Coach Division." Handwritten on back: "Plant 1. Machine shop, Depts. 2 & 4, Bldg. 12. Dept. 4, trunnion bracket machining, south end of line looking north. Factories--GMC, ca. 1943."