April 11, 1910: Dr. Charles Zerfing, the police surgeon, wants police officers and firefighters to be trained in “first aid to the injured.” Zerfing also wants an automobile ambulance equipped with emergency supplies, The Times says. Zerfing’s actions come after delays hindered the response to treating plainclothes Officer David Brooks, who was shot to death by robbers at 30th Street and Grand Avenue. The killing was evidently never solved.