Columbia subject headings:
Exiles--Spain--Correspondence--21st century.
Political refugees--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Refugees.
Harvard subject headings:
Exiles--Spain--Correspondence--20th century.
Political refugees--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Refugees
Princeton subject headings:
Exiles--Spain--Correspondence--21st century.
Political refugees--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Refugees.