Columbia subject headings:
Downing, A. J. (Andrew Jackson), 1815-1852--Congresses.
Landscape architects--United States--Biography--Congresses.
Harvard subject headings:
Downing, A. J. (Andrew Jackson), 1815-1852--Congresses.
Landscape architects--United States--Biography--Congresses.
Princeton subject headings:
Downing, A. J. (Andrew Jackson), 1815-1852--Congresses.
Landscape architects--United States--Biography--Congresses.