- Patrolman Amarillo Police Department, Texas, 1960-1964, police patrol sergeant, 1964-1966. Instructor finance University Alabama, University, 1968-1971, assistant professor School Social Work, 1971-1975, associate professor, 1975-1977, professor, chairman department criminal justice, since 1977. Research consultant Police Department, Birmingham, Alabama, 1977-1979.
- Dictionary of American Penology: A Revised and Expanded Edition
- A comprehensive overview of American penology covering practices, historical precedents, ideologies, changing attitudes, system descriptions, and trends in prison management, as well as noteworthy penal literature.
- Convicts, codes, and contraband: The prison life of men and women
- Book by Williams, Vergil L
- Dictionary of American Penology: A Revised and Expanded Edition 2nd edition by Williams, Vergil L. (1996) Hardcover