Interior of an unidentified factory, showing two factory workers gripping a large piece of equipment, ca.1935 

Interior view of unidentified factory, showing piles of fabric in the foreground, ca.1940 

Men standing near tables in the interior of an unidentified factory, ca.1920 

Interior view of an unidentified factory, with a close-up of male worker, ca.1940 

Unidentified factory interior, showing workers adjusting a small slab beneath a large machine, ca.1930 

Factory workers operating on machinery, showing pallet of buckets in foreground, ca.1930 

Interior view of an unidentified factory, showing three men at a large engine, ca.1940 

Interior view of an unidentified factory,showing workers from behind, ca.1940 

Female workers in a textile mill, showing a single woman with her back to the camera in the foreground, ca.1930 

Exterior view of large unidentified factory, showing steam pipes in foreground, ca.1950 

Interior view of a factory, showing large hydraulic press at center, May 1937 

Unidentified factory interior, ca.1950 

Two unidentified workers lowering chains in a factory, ca.1930 

Exterior of an unidentified factory, showing a group of people gathered near the base of a smokestack, ca.1930 

Close-up view of factory worker adjusting a lidded piece of machinery, ca.1950 

Exterior of an unidentified factory, showing the outlines of a porch in the foreground, ca.1925 

Two men working at a machine inside an unidentified factory, ca.1942 

Close-up of a man working a machine inside an unidentified factory, ca.1935 

Factory worker in a kiln of a ceramics factory, ca.1935 

Interior of an unidentified factory where a worker is "machining heat exchanger bodies", ca.1930