Columbia subject headings:
Hepburn, Mitchell Frederick, 1896-1953.
Ontario--Politics and government.
Prime ministers--Ontario--Biography.
Harvard subject headings:
Hepburn, Mitchell Frederick, 1896-1953
Ontario--Politics and government
Prime ministers--Ontario--Biography.
Princeton subject headings:
Hepburn, Mitchell Frederick, 1896-1953.
Ontario--Politics and government.
Prime ministers--Ontario--Biography.