Columbia subject headings:
Harvard subject headings:
Firkins, Oscar W., 1864-1932
Firkins, Oscar W., 1864-1932--Bibliography.
Firkins, Oscar W., 1864-1932--Correspondence.
University of Minnesota--Faculty--Biography.
Princeton subject headings:
Firkins, Oscar W., 1864-1932--Bibliography.
Firkins, Oscar W., 1864-1932--Correspondence.
Firkins, Oscar W., 1864-1932.
University of Minnesota--Faculty--Biography.