Columbia subject headings:
Hoover, Herbert, 1874-1964--Indexes.
United States--Politics and government--1929-1933--Indexes.
Harvard subject headings:
Hoover, Herbert, 1874-1964.
United States--Politics and government--1929-1933--Sources--Indexes.
United States. President. Public papers of the Presidents of the United States--Indexes.
Princeton subject headings:
Hoover, Herbert, 1874-1964--Indexes.
United States--Politics and government--1929-1933--Indexes.