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Karl Landsteiner
first discovers human blood groups that adapts the technique to type stains. -
Henry P. Deforrest
Pioneers the first systematic use of fingerprints in the United States by the New York Civil Service Commission. -
Professor R.A. Reiss
Reiss Sets up one of the first academic curricula in forensic science. -
Theodore Roosevelt
Roosevelt established the Federal Bureau of Investigation. -
Victor Balthazard
Victor publishes the first article on individualizing bullet markings. -
J.J Thomson
J.J. builds the first mass spectrometer known as the hyperbola spectrograph. -
Albert Schneider
First uses a vacuum apparatus to collect trace evidence. -
Edmond Locard
First suggests 12 matching points as a positive fingerprint identification. -
Georg Popp
Pioneers the use of botanical identification in forensic work. -
Charles E. Waite
Is the first to catalog manufacturing data about weapons. -
Edmond Locard
Enunciates the Locard's Exchange Principle. -
Luke May
One of the first American criminalists, pioneered striation analysis in the mark comparison, including an attempt at statistical validation. In 1930 he published The identification of knives, tools and instruments, a positive science, in The American Journal of Police Science.