Columbia subject headings:
Armories--United States.
United States. Army--Firearms.
United States. Army--Ordnance and ordnance stores.
Harvard subject headings:
Armories--United States.
United States. Army--Firearms.
United States. Army--Ordnance and ordnance stores.
Princeton subject headings:
Armories--United States.
United States. Army--Firearms.
United States. Army--Ordnance and ordnance stores.