1. Ambulance organization, equipment, and transport;Evatt,1886
2. Ambulances and the Ambulance Service in the Larger Cities;Leonard,1989
3. Ambulance service in Philadelphia;Willard,1883
4. The conveyance of patients to and from hospital, 1720–1850;Hart;Medical History,1978
5. The history of the ambulance;Barkley,1974