Privatizing Iowa's Prisons - Policy study published by the Public Interest Institute in January 2003 examines the potential for privatizing the state's prisons. [pdf format] - http://www.limitedgovernment.org/publications/pubs/studies/ps-03-1.pdf
Private and Public Prisons - U.S. General Accounting Office report combining studies from California, Tennessee, Washington, Texas, and New Mexico comparing operational costs and/or quality of service. - http://www.securitymanagement.com/library/000231.html
Florida Monitor: Cost of Public and Private Prisons - Information brief comparing costs of public and private prisons, released by the Florida Office of Program Policy Analysis and Government Accountability. - http://www.oppaga.state.fl.us/reports/crime/r96-69s.html