Columbia subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994--Homes and haunts--California--San Clemente.
Nixon, Richard M. (Richard Milhous), 1913-1994--Homes and haunts--Florida--Key Biscayne.
Presidents--United States--Protection.
United States. Secret Service--Appropriations and expenditures.
Harvard subject headings:
Princeton subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994.
Presidents--Protection--United States.
United States. Secret Service--Appropriations and expenditures.