Columbia subject headings:
Harvard subject headings:
Foreign workers--New York (State)--New York--History--19th century.
Foreign workers--New York (State)--New York--History--20th century.
German Americans--New York (State)--New York--History--19th century.
German Americans--New York (State)--New York--History--20th century.
Immigrants--New York (State)--New York--History--Pictorial works.
New York (State)--Emigration and immigration.
Princeton subject headings:
Foreign workers--New York (State)--New York--History--19th century.
Foreign workers--New York (State)--New York--History--20th century.
German Americans--New York (State)--New York--History--19th century.
German Americans--New York (State)--New York--History--20th century.
New York (State)--Emigration and immigration.