Factory worker spooling rubber on a conveyor belt, ca.1945 

Factory workers putting sheets of rubber into a machine, ca.1945 

Factory worker working with large machinery, ca.1950 

Worker placing white rubber mats into a machine, ca.1945 

Three factory workers making beads (treads?) and working with machinery, ca.1945 

Three factory workers standing at a table, working with rubber, ca.1930 

Factory worker manipulating a tube tire with machinery, ca.1930 

Factory worker manipulating a large white tire with machinery, ca.1930 

Close-up of a man chiseling something inside an unidentified factory, ca.1940 

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

Worker moving packages of rubber product, ca.1945 

Multiple factory workers completing a final inspection on tires, ca.1930 

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

Birdseye view of the Goodyear Tire and Rubber Company factory, ca.1930 

Machinery testing tires, ca.1930 

Two workers pulling a rubber tire from its mold at an unidentified factory in California Heights, 1930-1940 

Factory workers placing tires into molds, ca.1930 

Birdseye view of the Goodyear Tire and Rubber Company factory, showing surrounding residential area, ca.1930 

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

Factory worker standing behind a tire-production machine, ca.1930