View of the Gear Cutting Dept. at Plant 1, GMC Truck & Coach plant. Printed on front: "GMC Truck & Coach Division." Handwritten on back: "Plant 1. Machine shop & Heat Treat Depts. 2 & 4, Bldg. 12. Dept. 2, Gear Lapping Dept., north end of line looking south. Factories--GMC, ca. 1943."