Los Angeles City Police Crime Laboratory feature, 1955
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".