Columbia subject headings:
Iowa--Politics and government.
United States--Politics and government--1849-1877.
Harvard subject headings:
Grinnell, Josiah Bushnell, 1821-1891.
Iowa--Politics and government.
United States--Politics and government--1849-1877.
Princeton subject headings:
Iowa--Politics and government.
United States--Politics and government--1849-1877.