Columbia subject headings:
Internal revenue--United States.
Tariff--United States--History.
Taxation--United States--History.
Wells, David A. (David Ames), 1828-1898.
Harvard subject headings:
Internal revenue--United States.
Tariff--United States--History
Taxation--United States--History
Wells, David A. (David Ames), 1828-1898.
Princeton subject headings:
Internal revenue--United States.
Tariff--United States--History.
Taxation--United States--History.
Wells, David A. (David Ames), 1828-1898.