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. 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
3. Women performing synchronized calisthenics at National Cash Register (NCR) during a work break. Collection: Early 20th Century Engineering Lantern Slides Set: Personnel Date: undated Format: Image Agent: unknown
