Columbia subject headings:
Collective bargaining--Corrections--United States.
Correctional personnel--Labor unions--United States.
Prison administration--United States.
Harvard subject headings:
Collective bargaining--Corrections--United States.
Correctional personnel--Labor unions--United States.
Prison administration--United States
Princeton subject headings:
Labor unions--United States--Prison wardens.
Prisons--Officials and employees--United States.