1. Chart comparing output, intelligence and boredom of factory workers with superior intelligence. Work includes chocolate packaging and soap wrapping, inserting, and winding. Collection: Early 20th Century Engineering Lantern Slides Set: H. I. M. (Human Interaction Management) Date: undated Format: Image Agent: unknown
2. Chart comparing output, intelligence, and boredom of factory workers with inferior intelligence who perform soap wrapping and chocolate packing. Collection: Early 20th Century Engineering Lantern Slides Set: H. I. M. (Human Interaction Management) Date: undated Format: Image Agent: unknown
3. Chart illustrating the relationship between mental age and occupation Collection: Early 20th Century Engineering Lantern Slides Set: H. I. M. (Human Interaction Management) Date: undated Format: Image Agent: unknown
4. Score report for Dorothy Robinson on speed (operating), inspection, and dual (both). Collection: Early 20th Century Engineering Lantern Slides Set: Merit Rating Date: 13906 Format: Image Agent: unknown
5. Score report for Caroline Jones on speed (operating), inspection, and dual (both). Collection: Early 20th Century Engineering Lantern Slides Set: Merit Rating Date: 13903 Format: Image Agent: unknown
