Columbia subject headings:
Architecture--United States--History--19th century.
Architecture--United States.
Richardson, H. H. (Henry Hobson), 1838-1886.
Sullivan, Louis H., 1856-1924.
Harvard subject headings:
Architecture--United States
Architecture--United States--History--19th century
Richardson, H. H. (Henry Hobson), 1838-1886.
Sullivan, Louis H., 1856-1924.
Princeton subject headings:
Architecture--United States--History--19th century.
Architecture--United States.
Richardson, H. H. (Henry Hobson), 1838-1886.
Sullivan, Louis H., 1856-1924.