Columbia subject headings:
Harvard subject headings:
Immigrants--Latin America--Correspondence.
Latin America--Emigration and immigration--History.
Spain--Emigration and immigration--History.
Spaniards--Latin America--Correspondence.
Princeton subject headings:
Immigrants--Latin America--Correspondence.
Latin America--Emigration and immigration--History.
Spain--Emigration and immigration--History.
Spaniards--Latin America--Correspondence.