Columbia subject headings:
Adhémar, Jean.
Etching.
Piranesi, Giovanni Battista, 1720-1778.
Piranesi, Giovanni Battista, 1720-1778. Imaginary prisons.
Prisons.
Harvard subject headings:
Adhémar, Jean.
Carceri d'invenzione.
Etching
Piranesi, Giovanni Battista, 1720-1778
Prisons
Princeton subject headings:
Prisons in art.