Columbia subject headings:
Merchants--New York (State)--New York--History.
New York (N.Y.)--Social conditions.
Occupational mobility--New York (State)--New York--History.
Harvard subject headings:
Merchants--New York (State)--New York.
Princeton subject headings:
Merchants--New York (State)--New York--History.
New York (N.Y.)--Social conditions.
Occupational mobility--New York (State)--New York--History.