1. Graph showing use of various personnel management devices in 195 concerns in employment, maintenance, payment, and factors in wage determination. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
2. 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
3. Graph showing use of various personnel management devices in 195 concerns in insurance, development, and research control. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
4. 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
5. Effect of noise vs. quiet on the ability to work. The woman typist is wearing a mask under quiet and noisy conditions ; her breath is monitored by a man who is taking notes. Collection: Early 20th Century Engineering Lantern Slides Set: H. I. M. (Human Interaction Management) Date: undated Format: Image Agent: unknown
