Favorite this☆ Worker balancing crankshafts, Plant 4, GMC Truck & Coach Division factory Description: View of worker balancing crankshafts at Plant 4, Engine Assembly, Bldg. 20, GMC Truck & Coach plant. Printed on front: "GMC Truck & Coach Division." Handwritten on back: "Plant 4, Engine Assembly, Bldg. 20, third floor. Balancing crankshafts. Factories--GMC, ca. 1943." Details Resource ID: na050281 Subject: Automobile industry workers--Michigan--Pontiac Motor vehicles--Motors--Crankshafts Automobile factories--Michigan--Pontiac GMC Truck & Coach Photographic prints Date Issued: 1943 (year approximate) Format: 1 photographic print ; 10 x 7.5 in. Member of: National Automotive History Collection Filing Location: Factories--GMC, ca. 1943, #1 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.