Columbia subject headings:
Extortion--New York (State)--New York.
New York (N.Y.)--Harbor.
New York Harbor (N.Y. and N.J.)
Stevedores--New York (State)--New York.
Harvard subject headings:
Princeton subject headings:
Extortion--New York (State)--New York.
Harbors--New York (State)--New York.
Stevedores--New York (State)--New York.