William Waller demonstrating Plymouth's Safeguard wheel to Women's Ambulance Transport Corps officers

View of William Waller demonstrating a Plymouth Safeguard wheel to members of Women's Ambulance Transport Corps. Plymouth dealer Lonnie Hull in background. Label on back: "Ambulance Corps studies mechanics. Comparable to the active women's corps of Britain are these 'Watcos' (Women's Ambulance Transport Corps), whose membership is rapidly growing in several states. Driving skill and ability to make their own repairs is being taught in a series of mechanical training classes at the service shops of auto dealers in many cities. Here Plymouth dealer Lonnie Hull (right) and Service Instructor William Waller explain Plymouth's Safeguard wheel design to Lieut. Ruth Keane, Sergt. Dorothy Shattuck and Lieut. Lotte Walter. From: Plymouth Press Bureau, J. Stirling Getchell, Inc., New Center Bldg., Detroit. 4112-31, WP4323." Handwritten on back: "Women workers."