Columbia subject headings:
Harvard subject headings:
New York (N.Y.)--Social conditions
Puerto Ricans--New York (State)--New York--Biography
Puerto Ricans--New York (State)--New York--History--20th century.
Puerto Ricans--New York (State)--New York--Social conditions.
Puerto Rico--Emigration and immigration--History--20th century.
United States--Emigration and immigration--History--20th century.
Princeton subject headings:
New York (N.Y.)--Social conditions.
Puerto Ricans--New York (State)--New York--Biography.
Puerto Ricans--New York (State)--New York--History--20th century.
Puerto Ricans--New York (State)--New York--Social conditions.
Puerto Rico--Emigration and immigration--History--20th century.
United States--Emigration and immigration--History--20th century.