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Calvin Goddard was a Forensic scientist from Connecticut, also a professor of police science at Northwestern University. Goddard was the founder of Firearms Identification making him a Pioneer of Forensic ballistics. The police sought him out to assist in investigations across the country.
Sacco and Vanzetti: 2 Italian men who robbed a factorys payroll and murdered a security guard in South Braintree, MA on April 1,1920. Using comparison microscopy and the helixometer, he inspected the weapons and the bullet that killed the guard, he tested 3 types of guns and found that Saccos gun matched the bullets found at the crime scene. The two were found gulity and sentenced to death.
St Valentine's Day Massacre: On February 14, 1929, seven gang members were killed by a rival gang while dressed as Chicago police officers. This gang attack was ordered by Al Capone over illegal trafffic of alcohol during prohabition, Calvin Goddard was lead forensics expert and solved the massacre.