Columbia subject headings:
Callaghan, James.
Prime ministers--Great Britain--Biography.
Harvard subject headings:
Callaghan, James, 1912-2005.
Great Britain--Politics and government--1945-
Prime ministers--Great Britain--Biography.
Princeton subject headings:
Callaghan, James, 1912-2005.
Great Britain--Politics and government--20th century.
Prime ministers--Great Britain--Biography.