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Generator works at the winding of a generator stator...Wilson Dam, Sheffield vicinity, Ala., 1942. Creator: Alfred T Palmer.
 
The countryside near the TVA site of the Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
The countryside near the Tennessee Valley Authority dam site, Douglas Dam vicinity, Tenn., 1942. Creator: Alfred T Palmer.
 
The countryside near the Tennessee Valley Authority dam site, Douglas Dam vicinity, Tenn., 1942. Creator: Alfred T Palmer.
 
Countryside near the TVA site of the Douglas dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Early stage of construction work at the TVA's Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Construction work at the TVA's Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Checking the alignment of a turbine shaft at the top of the guide..., Watts Bar Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Tightening a nut on a guide vane operating seromotor in TVA's..., Watts Bar Dam, Tennessee, 1942. Creator: Alfred T Palmer.
 
Generator hall of the powerhouse, Chickamauga Dam, Tenn. , 1942. Creator: Alfred T Palmer.
 
Switch yard at TVA's Wilson Dam hydroelectric plant, vicinity of Sheffield, Ala., 1942. Creator: Alfred T Palmer.
 
Eight generator units in the generator room of a new...Wilson Dam, Sheffield vicinity, Ala., 1942. Creator: Alfred T Palmer.
 
Construction at Douglas Dam (TVA), Tenn., 1942. Creator: Alfred T Palmer.
 
Construction at TVA's Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Welder at work on Douglas Dam, Tenn. (TVA), 1942. Creator: Alfred T Palmer.
 
Excavating within the log cofferdam during an early stage of construction, Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Early stages of construction work at the TVA's Douglas Dam, Tenn., 1942. Creator: Alfred T Palmer.
 
Construction of Douglas Dam, TVA, 1942. Creator: Alfred T Palmer.
 
Insulators and transmission wires in the switchyard of the TVA's Chickamauga Dam..., Tennessee, 1942 Creator: Alfred T Palmer.
 
Sunset silhouette of flying fortress, Langley Field, Va., 1942. Creator: Alfred T Palmer.
 
Servicing [an] A-20 bomber, Langley Field, Va., 1942. Creator: Alfred T Palmer.
 
Servicing [an] A-20 bomber, Langley Field, Va., 1942. Creator: Alfred T Palmer.
 
The kind of man Hitler wishes we didn't have..., 1942. Creator: Alfred T Palmer.
 
Here's our mission..., Langley Field, Va., 1942. Creator: Alfred T Palmer.
 
Hitler would like this man to go home and forget about the war..., 1942. Creator: Alfred T Palmer.
 
One of America's new warships of the air, a mighty YB-17 bomber..., Langley Field, Va. , 1942. Creator: Alfred T Palmer.
 
A giant of the skyways poises for flight, Langley Field, Va. , 1942. Creator: Alfred T Palmer.
 
Welder making boilers for a ship, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Welder making boilers for a ship, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Welder making boilers for a ship, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Welder making boilers for a ship, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Welders making boilers for a ship, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Maintenance mechanic in largest coal press..., Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Mechanical operator on boiler parts, Combustion Engineering Co., Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Maintenance man at the Combustion Engineering Co. working at the largest...Chattanooga, Tenn., 1942. Creator: Alfred T Palmer.
 
Mounting motor on a Fairfax B-25 bomber, North American Aviation, Inc., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
A wing brace assembly for a B-25 bomber is prepared...North American Aviation, Inc., Calif., 1942. Creator: Alfred T Palmer.
 
Making wiring assemblies at a junction box..., North American Aviation, Inc., Inglewood, CA, 1942. Creator: Alfred T Palmer.
 
Riveting team working on the cockpit shell of a...Douglas Aircraft Co., Long Beach, Calif. , 1942. Creator: Alfred T Palmer.
 
B-25 bombers on the outdoor assembly line at North American Aviation..., Kansas City, Kansas, 1942. Creator: Alfred T Palmer.
 
Punching rivet holes in a frame member for a B-25 bomber...North American Aviation, Inc., CA, 1942. Creator: Alfred T Palmer.
 
Woman working on an airplane motor at North American Aviation, Inc., plant in Calif., 1942. Creator: Alfred T Palmer.
 
B-25 bomber planes at the North American Aviation, Incorporated..., Kansas City, Kansas, 1942. Creator: Alfred T Palmer.
 
New B-25 bombers lined up for final inspection..., North American Aviation, Inc., Calif. , 1942. Creator: Alfred T Palmer.
 
Assembling B-25 bombers at North American Aviation, Kansas City, Kansas, 1942. Creator: Alfred T Palmer.
 
North American B-25 bomber is prepared...North American Aviation, Inc., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
Another North American B-25 bomber rolls off the final assembly line to join other ships..., 1942. Creator: Alfred T Palmer.
 
View of the B-25 final assembly line at North American Aviation's Inglewood, California, plant, 1942 Creator: Alfred T Palmer.
 
Employees on the "Sunshine" assembly line at North American's plant..., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
Two women employees of North American Aviation, Incorporated, assembling a section of a..., 1942. Creator: Alfred T Palmer.
 
Sheet metal parts are numbered with this pneu...North American Aviation, Inc., Inglewood, CA, 1942. Creator: Alfred T Palmer.
 
A young woman employee of North American Aviation, Incorporated..., Inglewood, Calif. , 1942. Creator: Alfred T Palmer.
 
A young woman employee of North American Aviation, Incorporated..., Inglewood, Calif. , 1942. Creator: Alfred T Palmer.
 
Clerk in one of the stock rooms of North American Aviation, Inc..., Inglewood, Calif. , 1942. Creator: Alfred T Palmer.
 
On North American's outdoor assembly line..., North American Aviation, Inc., Inglewood, Calif., 1942 Creator: Alfred T Palmer.
 
Cowling and control rods are added to motors for...North American Inc., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
An employee in the drill-press section of North American's huge machine..., Inglewood, Calif. , 1942 Creator: Alfred T Palmer.
 
Metal parts are placed on masonite by..., North American Aviation, Inc., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
In North American's modern machine shop...North American Aviation, Inc., Inglewood, Calif., 1942. Creator: Alfred T Palmer.
 
Operating a hand drill at North American Aviation, Inc..., Inglewood, Calif., 1942. Creator: Alfred T Palmer.