I recently was made aware of this excellent film of the Fender Guitar Factory circa 1959. It shows how the guitars were manufactured by hand using old school technology in the steamy Fullerton California cinder block building which was not equipped with air-conditioning. I suspect OSHA inspectors of today would give the plant a failed rating, since there was little if any safety equipment. Male employees worked bare-chested and female employees wore high-heeled shoes in the factory, which was cooled only by fans.
Look carefully and you will see a young Leo Fender, Freddie Travares and Abigail Ybbara, who skillfully hand-wound some of the greatest pickups for Fender.
As comparison, the following videos are tours of todays Fender Factory in Corona showing how much the manufacturing process of Fender guitars has changed.