View of workers at spray booth, Plant 4, Service Dept., Bldg. 20, Operations Civilian and Military, GMC Truck & Coach plant. Printed on front: "GMC Truck & Coach Division. 2-3-44." Handwritten on back: "Plant 4, Service Dept., Bldg. 20, Operations Civilian and Military. Spray booth, 1st floor. Factories--GMC, 2-3-1944."