Columbia subject headings:
Historic sites--New York (State)--New York--Guidebooks.
New York (N.Y.)--Tours.
Radicalism--New York (State)--New York--History--Miscellanea.
Harvard subject headings:
Historic sites--New York (State)--New York--Guidebooks
New York (N.Y.)--Tours.
Radicalism--New York (State)--New York--History--Miscellanea.
Princeton subject headings:
Guidebooks.
Historic sites--New York (State)--New York--Guidebooks.
New York (N.Y.)--Tours.
Radicalism--New York (State)--New York--History--Miscellanea.