Patrolman John Quinn, a 37-year-old white male, was a dedicated officer with the Chicago Police Department, assigned to the 41st Precinct. On November 21, 1903, while investigating a series of armed robberies and murders, he encountered a suspect named Gustave Marx at Greenberg’s saloon. Quinn, along with his partner Patrolman Blaul, had been tracking Marx, who was known to be involved in the notorious "Car Barn Murder" and other crimes. As Quinn attempted to arrest Marx, the suspect drew a re
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