The Pennsylvania Probation and Parole Quarterly; Official Publication of the Pennsylvania Association on Probation and Parole. unknown place: The Institute of Local Government of the Pennsylvania State College, April 1940

The Pennsylvania Probation and Parole Quarterly; Official Publication of the Pennsylvania Association on Probation and Parole. unknown place: The Institute of Local Government of the Pennsylvania State College, April 1940, Volume: Gilbert D1247. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526988 Accessed December 27, 2025.