13. Two drawings showing half outside elevation and sectional front elevation of steam engine. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
14. Steam boiler showing steam and water from risers Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
15. Smoke indicator, sectional view through boiler uptake Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
16. Diagram of assembly of inertia type speed regulating controller Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
17. Fuel oil heater steam boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
18. Diagram of screening and interviewing booths for job placement Collection: Early 20th Century Engineering Lantern Slides Set: Merit Rating Date: undated Format: Image Agent: unknown
19. Operation chart for an improved method of assembling bolts and washers with detailed instructions for left and right hands. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
20. Man caring a cart with a heavy load. He has a face mask measuring his efficiency over time. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
21. Bucket labelled "an intepretation of the Freudian mind." Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
22. Ergogram measuring physical fatigue after repeated motion. Collection: Early 20th Century Engineering Lantern Slides Set: H. I. M. (Human Interaction Management) Date: undated Format: Image Agent: unknown
23. Torpedo tubes from the destroyers Pensacola class, Mahan class, Sampson class, Benham class, and North Carolina class Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
24. Steam boiler showing water level, generator, 4 ply metal bellows, and feed water regulator valve Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
