Columbia subject headings:
Blum, John Morton, 1921-2011.
Historians--United States--Biography.
Historiography--United States--History--20th century.
United States--Historiography.
United States--Politics and government--Historiography.
Harvard subject headings:
Blum, John Morton, 1921-
Blum, John Morton, 1921-2011.
Historians--United States--Biography
Historiography--United States--History--20th century.
United States--Historiography.
United States--Politics and government--Historiography.
Princeton subject headings:
Blum, John Morton, 1921-2011.
Historians--United States--Biography.
Historiography--United States--History--20th century.
United States--Historiography.
United States--Politics and government--Historiography.