Columbia subject headings:
Authors, American--20th century--Biography.
Humphrey, Hubert H. (Hubert Horatio), 1911-1978.
Lewis, Sinclair, 1885-1951.
Manfred, Frederick Feikema, 1912-1994.
Minnesota--Biography.
Harvard subject headings:
Princeton subject headings:
Authors, American--20th century--Biography.
Humphrey, Hubert H. (Hubert Horatio), 1911-1978.
Lewis, Sinclair, 1885-1951.
Manfred, Frederick Feikema, 1912-1994.
Minnesota--Biography.