Columbia subject headings:
Frost, Leslie M. (Leslie Miscampbell), 1895-1973.
Ontario--Politics and government.
Politicians--Ontario--Biography.
Prime ministers--Ontario--Biography.
Harvard subject headings:
Frost, Leslie M. (Leslie Miscampbell), 1895-1973
Ontario--Politics and government.
Prime ministers--Ontario--Biography.
Princeton subject headings:
Frost, Leslie M. (Leslie Miscampbell), 1895-1973.
Ontario--Politics and government.
Politicians--Ontario--Biography.
Prime ministers--Ontario--Biography.