Clinton Truman Duffy (1898–1982) was the warden of San Quentin State Prison between 1940 and 1952.
[1] The 1954 film Duffy of San Quentin tells his story as a warden.
[citation needed][2] His accomplishments during his tenure as warden include:[1][3] He was known to walk unarmed among the prisoners and to chat with them.
[1][3] Although he "supervised 90 executions during his tenure as warden", he opposed capital punishment[1] and believed that murderers were more likely to rehabilitate than other criminals.
[4] After he left San Quentin, he worked for the state's parole board; in addition, he wrote books and gave lectures about capital punishment.