Columbia subject headings:
Boulder County (Colo.)--History.
Clear Creek County (Colo.)--History.
Colorado--Biography.
Gilpin County (Colo.)--History.
Jefferson County (Colo.)--History.
Harvard subject headings:
Boulder County (Colo.)--History.
Clear Creek County (Colo.)--History.
Colorado--Biography.
Gilpin County (Colo.)--History.
Jefferson County (Colo.)--History.
Princeton subject headings:
Boulder County (Colo.)--History.
Clear Creek County (Colo.)--History.
Colorado--Biography.
Gilpin County (Colo.)--History.
Jefferson County (Colo.)--History.