Columbia subject headings:
Black Hills War, 1876-1877.
Crook, George, 1829-1890.
Harvard subject headings:
Black Hills War, 1876-1877.
Crook, George, 1828-1890.
Crook, George, 1829-1890.
Princeton subject headings:
Black Hills War, 1876-1877.
Crook, George, 1828-1890.