Columbia subject headings:
Palaces--United States.
United States--Social life and customs--1865-1918.
United States--Social life and customs--1918-1945.
Upper class--United States.
Harvard subject headings:
Palaces--United States.
United States--Social life and customs--1865-1918.
United States--Social life and customs--1918-1945.
Upper class--United States.
Princeton subject headings:
Palaces--United States.
United States--Social life and customs--1865-1918.
United States--Social life and customs--1918-1945.
Upper class--United States.