Biography
Samuel R. Caldwell was the first person in the United States arrested and convicted for selling marijuana under the Marihuana Tax Act of 1937. Arrested in Denver within a day of the act taking effect, he was sentenced to four years at the United States Penitentiary, Leavenworth, and released from custody in 1940 after serving three years. His case is often cited as the opening prosecution of federal marijuana prohibition.
Case
United States Penitentiary, Leavenworth