Columbia subject headings:
Armories--Europe--History.
Armories--Germany--History.
Military architecture--Europe--History.
Military architecture--Germany--History.
Harvard subject headings:
Armories--Europe--History.
Armories--Germany--History.
Military architecture--Europe--History.
Military architecture--Germany--History.
Princeton subject headings:
Armories--Germany--History.
Armories--History.
Arsenals--Germany--History.
Arsenals--History.
Military architecture--Germany--History.
Military architecture--History.