1. Chart from a study by M. R. Trabue, comparing the abilities and personality traits of general clerical workers across different industries. 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 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
3. 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
