Columbia subject headings:
Colby, William Egan, 1920-1996.
Intelligence officers--United States--Biography.
United States. Central Intelligence Agency.
Harvard subject headings:
Colby, William Egan, 1920-
Intelligence officers--United States--Biography.
United States. Central Intelligence Agency
Princeton subject headings:
Colby, William Egan, 1920-1996.
Intelligence officers--United States--Biography.
United States. Central Intelligence Agency