In 1971, Carleton published his ''Politics and Punishment: The History of the Louisiana State Penal System'' (1971), with emphasis on the large prison farm at the Louisiana State Penitentiary at Angola in East Feliciana Parish]], bordered on three sides by the [[Mississippi River]]. Carleton reports that nearly "overnight" in Louisiana and several other southern prisons, the inmate population became predominantly [[African-American]].<ref>{{cite web|url=https://books.google.com/books?id=FJp7dKVIl2UC&pg=PA148&lpg=PA148&dq=Rollo+C.+Lawrence&source=bl&ots=hQAvyuLGI-&sig=JnN17KqcyZ4zPse8mQnvzEr6WuE&hl=en&sa=X&ved=0CFQQ6AEwDmoVChMI0qvV4pLvxgIVA_eACh0QHgDr#v=onepage&q=Rollo%20C.%20Lawrence&f=false|title=Politics and Punishment: The History of the Louisiana State Penal System|author=Mark T. Carleton|publisher=[[Louisiana State University]] Press|location=Baton Rouge, Louisiana|date=1971|isbn=0-8071-0940-1|accessdate=July 22, 2015}}</ref> The prison was populated at first mostly by young men from farming backgrounds. Carleton claims that agriculture became key to southern prisons in the era after the [[American Civil War]]. Convict labor and farm work became "synonymous terms in the public and political mind."<ref>{{cite web|url=http://www.burkfoster.com/plantationdays.htm|title= | In 1971, Carleton published his ''Politics and Punishment: The History of the Louisiana State Penal System'' (1971), with emphasis on the large prison farm at the Louisiana State Penitentiary at Angola in East Feliciana Parish]], bordered on three sides by the [[Mississippi River]]. Carleton reports that nearly "overnight" in Louisiana and several other southern prisons, the inmate population became predominantly [[African-American]].<ref>{{cite web|url=https://books.google.com/books?id=FJp7dKVIl2UC&pg=PA148&lpg=PA148&dq=Rollo+C.+Lawrence&source=bl&ots=hQAvyuLGI-&sig=JnN17KqcyZ4zPse8mQnvzEr6WuE&hl=en&sa=X&ved=0CFQQ6AEwDmoVChMI0qvV4pLvxgIVA_eACh0QHgDr#v=onepage&q=Rollo%20C.%20Lawrence&f=false|title=Politics and Punishment: The History of the Louisiana State Penal System|author=Mark T. Carleton|publisher=[[Louisiana State University]] Press|location=Baton Rouge, Louisiana|date=1971|isbn=0-8071-0940-1|accessdate=July 22, 2015}}</ref> The prison was populated at first mostly by young men from farming backgrounds. Carleton claims that agriculture became key to southern prisons in the era after the [[American Civil War]]. Convict labor and farm work became "synonymous terms in the public and political mind."<ref>{{cite web|url=http://www.burkfoster.com/plantationdays.htm|title= |