Westinghouse Works, 1904 (1904/1998)

Directed by G.W. Bitzer

IMDb
Wikipedia

A collection of 21 industrial shorts. Three were officially released on DVD on the More Treasures From American Film Archives box set, which is long out of print and fetching up to $400 on Amazon. All 21 are available on the Library of Congress official YouTube Channel. Links to those and to each film’s individual IMDb page are provided on the Wikipedia page linked above.