Columbia subject headings:
Colorado--Economic conditions.
Colorado--Politics and government--1876-1950.
Colorado--Politics and government--To 1876.
Colorado--Social conditions.
Frontier and pioneer life--Colorado.
Harvard subject headings:
Cities and towns--Colorado--History--19th century.
Colorado--Economic conditions.
Colorado--Social conditions.
Frontier and pioneer life--Colorado
Social classes--Colorado--History--19th century.
Princeton subject headings:
Colorado--Economic conditions.
Colorado--Politics and government--1876-1950.
Colorado--Politics and government--To 1876.
Colorado--Social conditions.
Frontier and pioneer life--Colorado.