Sergeant Margaret Hill using jiu jitsu in training demonstration, Hudson Motor Car Company

View of Sergeant Margaret Hill disarming a fellow patrolman, Douglas Morgan, with jiu jitsu during training at the Hudson Motor Car Company factory in Detroit. Several uniformed policewomen stand in background. Label on back: "From: Hudson Motor Car Company. Immediate release. Calling gunman's bluff. How to dismiss a visitor quickly by jiu jitsu methods is demonstrated with spirit by Sergeant Margaret Hill, policewoman at the United States Naval Ordnance plant, operated by Hudson Motor Car Company. Here she operates on a fellow patrolman, Douglas Morgan. Instruction in the art of jiu jitsu has been added to the courses given to Hudson plant protection forces. A new group of 60 plant policewomen has completed several weeks of initial training course, a new activity which again places Hudson in the forefront in plant protection activities in the Detroit area. Together with more than 30 girl escorts at the four plants, these classes bring to nearly 100 the number of women engaged in plant protection activities for the company." Handwritten on back: "Women workers."