Columbia subject headings:
Immigrants--Puerto Rico--Biography--Dictionaries.
Immigrants--Puerto Rico--History--19th century.
Puerto Rico--Emigration and immigration--History--19th century.
Spain--Emigration and immigration--History--19th century.
Spaniards--Puerto Rico--Biography--Dictionaries.
Spaniards--Puerto Rico--History--19th century.
Harvard subject headings:
Immigrants--Puerto Rico--Biography--Dictionaries.
Immigrants--Puerto Rico--History--19th century.
Puerto Rico--Emigration and immigration--History--19th century.
Spain--Emigration and immigration--History--19th century.
Spaniards--Puerto Rico--Biography--Dictionaries.
Spaniards--Puerto Rico--History--19th century.
Princeton subject headings:
Immigrants--Puerto Rico--Biography--Dictionaries.
Immigrants--Puerto Rico--History--19th century.
Puerto Rico--Emigration and immigration--History--19th century.
Spain--Emigration and immigration--History--19th century.
Spaniards--Puerto Rico--Biography--Dictionaries.
Spaniards--Puerto Rico--History--19th century.