An Account of the Leopold and Loeb Case: "Leopold managed to keep intellectually active in prison. He taught in the
prison school, mastered twenty-seven foreign languages, worked as an x-ray
technician in the prison hospital, reorganized the prison library, volunteered
to be tested with an experimental malaria vaccine, and designed a new system
of prison education. In the 1950's, an elderly and now retired Robert Crowe
reportedly offered to write a letter to the Illinois Parole Board urging
his release. In 1958, after thirty-four years of confinement, Leopold was
released from prison."