12 images. Los Angeles City Police Crime Laboratory feature, 13 April 1955. Ray Pinker (Chief Criminalist); William Penprase (Police chemist); Sergeant Jay Allen; Sergeant Daniel McCauley; Dewayne Wolfer (Firearms expert); Warren M. Stilson; Officer Lee Jones.; Caption slip reads: "Photographer: Gray. Date: 04-13. Reporter: Adler. Assignment: Crime Lab. Monday. 8: Firearms Identification Expert Dewayne Wolfer examining fired cartridge case in comparison microscope, while Capt. Warren M. Stilson, commander of LAPD's Scientific Investigation Division, examines gun. 2/3/4/, l to r: Capt. Warren M. Stilson; Lt. Lee Jones, assist commander of Scientific Investigation Division, and Chief Criminalist Ray Pinker in Pinker's new office and laboratory in the new Police Building. 23, front to back: Lt. Lee Jones; Ray Pinker and Capt. Warren Stilson in new building's negative file room. 27/28: Chief Criminalist Ray Pinker at his overloaded desk in the present Crime Lab in the old Central Jail. 37/38: Chief Criminalist Ray Pinker at his desk in present quarters, with Police Chemist William Penprase working on a titration in the background -- note crammed office--laboratory. 25/26, l to r: Sgt. Jay Allen examining spectographic film while Sgt. Daniel McCauley makes a spectographic analysis in tiny present quarters. 7: Firearms Identification Expert Dewayne Wolfer examining fired cartridge cases in a comparison microscope. 24: Shots looking along hallway on fourth floor of new Police Building, the floor occupied by LAPD's Scientific Investigation Division".