Columbia subject headings:
Hechler, Ken, 1914-2016.
Presidents--United States--Biography.
Presidents--United States--Staff--Biography.
Truman, Harry S., 1884-1972.
Harvard subject headings:
Hechler, Ken, 1914-2016.
Presidents--United States--Biography
Presidents--United States--Staff--Biography
Truman, Harry S., 1884-1972
Princeton subject headings:
Hechler, Ken, 1914-2016.
Presidents--United States--Biography.
Presidents--United States--Staff--Biography.
Truman, Harry S., 1884-1972.