1. Mill-worker operating circular saw to cut super-chargers for airplane engines at Packard Motor Company. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
2. Photograph of factory where 10,000 automobile frames a day are manufactured using automation. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: Milwaukee, WI Date: undated Format: Image Agent: unknown
