Columbia subject headings:
Prisons--Canada.
Prisons--United States.
Reformatories--Canada.
Reformatories--United States.
Harvard subject headings:
Prisons--Canada
Prisons--United States
Reformatories--Canada.
Reformatories--United States
Princeton subject headings:
Prisons--Canada.
Prisons--United States.
Reformatories--Canada.
Reformatories--United States.