11. 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
12. Close up of electronic milling tool cutting a bracket for an airplane propeller in Chicago Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Chicago, Illinois Date: undated Format: Image Agent: unknown
13. Gear hob from the Barber Coleman Company Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Rockford, Illinois Date: undated Format: Image Agent: unknown
14. Gridley multiple spindle automatic machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15. Revolving vertical turrets machining parts in assembly line Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
16. Multiple spindle vertical lathe Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
17. Men in automobile measuring acceleration with a pousometer. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Date: undated Format: Image Agent: unknown
18. Hele-Shaw variable stroke pump engine Collection: Early 20th Century Engineering Lantern Slides Set: Cramer's Date: undated Format: Image Agent: unknown
19. Man reading to workers assembling cigars in a factory in Cuba. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Location: Cuba Date: undated Format: Image Agent: unknown
20. Men using instruments to measure effect of using brakes on fuel level. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Date: undated Format: Image Agent: unknown
