19 feb 1929 anni - Phillip Gravelle

Descrizione:

in the 1920s forensic ballistics was waiting at its inception. In 1929, using a comparison microscope adapted for the purpose by Calvin Goddard and his partner Phillip Gravelle used similar techniques to absolve the Chicago Police Department of participation in the St. Valentine's Day Massacre.

Aggiunto al nastro di tempo:

Data: