October 1942. "Two assembly line workers at the Long Beach, California, plant of Douglas Aircraft Company enjoy a well-earned lunch period. Nacelle parts of a heavy bomber form the background." 4x5 Kodachrome transparency by Alfred Palmer for the Office of War Information. View full size.

October 1942. "A new B-25 bomber is brought for a test hop to the flight line at the Kansas City, Kansas, plant of North American Aviation." 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information. View full size.

October 1942. "Women are trained as engine mechanics in thorough Douglas training methods. Douglas Aircraft Company, Long Beach, California." Skipping ahead to 2009, and the end of an era: Today Kodak announced that, after 74 colorful years, it will stop making Kodachrome film. 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information. View full size.

October 1942. "Lieutenant 'Mike' Hunter, Army test pilot assigned to Douglas Aircraft Company, Long Beach, California." 4x5 Kodachrome transparency by Alfred Palmer for the Office of War Information. View full size.

June 1942. "Construction at Douglas Dam, Tennessee Valley Authority." 4x5 Kodachrome transparency by Alfred Palmer for the OWI. View full size.

July 1942. Fairfax bomber plant, Kansas City. "A wing brace for a B-25 bomber being prepared for the assembly line at North American Aviation. With plenty of speed, a 1,700-mile cruising range and a ceiling of 25,000 feet, the B-25 has performed as a medium bomber and as an escort plane. General Doolittle has called the ship the best military plane in existence." 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information. View full size.

August 1942. Stillwater County, Montana. "Development at the site of the mill for the Mouat Chromite mine. Mouat was recently constructed at the foot of one of the higher peaks in Stillwater County." 4x5 Kodachrome transparency by Alfred Palmer for the Office of War Information. Library of Congress. View full size.

October 1942. Inglewood, Calif. "Parts are marked with this pneumatic numbering machine in North American Aviation's sheet metal department." 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information. View full size.

June 1942. Fort Knox, Kentucky. "The crew of an M-3 tank learns all the ways of causing trouble for the Axis with a 75mm gun, a 37mm gun and four machine guns." 4x5 Kodachrome transparency by Alfred Palmer, OWI. View full size.

Nov. 1941. Etna, Pennsylvania. "Blast furnaces and ore at the Carnegie-Illinois Steel mills." View full size. 4x5 Kodachrome transparency by Alfred Palmer.

June 1942. "TVA chemical plant where elemental phosphorus is made. Vicinity of Muscle Shoals, Alabama." View full size. 4x5 Kodachrome transparency by Alfred Palmer for the Office of War Information.

February 1942. Akron, Ohio. Another esoteric industrial process involving scary-looking thingamabobs essential to the war effort. Executive summary: Performing a painstakingly choreographed ballet of complicated tasks at precisely timed intervals, Joe Warworker here is doing his part to Speed Victory! View full size. 4x5 nitrate negative by Alfred Palmer for the Office of War Information.

February 1942. Firestone Rubber plant in Akron, Ohio. "Conversion. Beverage containers to aviation oxygen cylinders. Before completion of the fourth and final welding operation in the manufacture of shatterproof oxygen cylinders for high altitude flying, all straps are subjected to physical tests to determine the strength of the weld. Occasional radiographic inspections are made to insure the quality of workmanship after the two halves of the cylinder are brought together in this atomic welding machine and made one unit. Here, the operator has just completed the union and is about to remove the whole cylinder." 4x5 nitrate negative by Alfred Palmer for the Office of War Information. View full size.

Pittsburgh, August 1942. "The comforts of home looked pretty good to Navy Radioman John Marshall Evans and Sergeant French L. Vineyard, who spent Sunday with the family of their poster colleague George Woolslayer." Medium format negative negative by Alfred Palmer for the OWI. View full size.

Fort Knox, June 1942. "Light tank going through water obstacle." View full size. 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information.