Columbia subject headings:
Frontier and pioneer life--Arizona.
Tombstone (Ariz.)
Harvard subject headings:
Frontier and pioneer life--Arizona
Frontier and pioneer life--Arizona--Tombstone
Outlaws--Arizona--Tombstone--History--19th century.
Tombstone (Ariz.)
Tombstone (Ariz.)--Biography.
Tombstone (Ariz.)--History--19th century.
Princeton subject headings:
Frontier and pioneer life--Arizona.
Tombstone (Ariz.)