Fingerprints : Thomas Jennings, 1910
Identification of remains : Buck Ruxton, 1935
Questioned documents : Angelo John Lamarca, 1956
Offender profiling : George Metesky, 1957
Firearms examination : John Branion, 1967
Bloodstain pattern analysis : W. Thomas Zeigler Jr., 1975
Explosives : Steven Benson, 1985
DNA : Colin Pitchfork, 1987
Time since death : Albert Walker, 1996.