Columbia subject headings:
Firearms--United States.
Harpers Ferry Armory (U.S.)
Springfield Armory (U.S.)
United States. War Department--Appropriations and expenditures.
Harvard subject headings:
Firearms--United States.
Harpers Ferry Armory (U.S.)
Springfield Armory (U.S.)
United States. War Department--Appropriations and expenditures.
Princeton subject headings:
Firearms--United States.
Springfield Armory (U.S.)
United States. Armory (Harper's Ferry, W. Va.)
United States. War Department--Appropriations and expenditures.