Columbia subject headings:
Courage--United States.
Legislators--United States--Biography.
United States--Politics and government.
United States. Congress. Senate--Biography.
Harvard subject headings:
Courage--United States.
Courage.
Legislators--United States--Biography
United States--Politics and government.
United States. Congress. Senate--Biography.
Princeton subject headings:
Courage--United States.
Courage.
Legislators--United States--Biography.
United States--Politics and government.
United States. Congress. Senate--Biography.