Columbia subject headings:
Azoreans--United States--History.
Azores--Emigration and immigration--History.
United States--Emigration and immigration--History.
Harvard subject headings:
Azoreans--United States--History.
Azores--Emigration and immigration--History.
United States--Emigration and immigration--History.
Princeton subject headings:
Azoreans--United States--History.
Azores--Emigration and immigration--History.
United States--Emigration and immigration--History.