Columbia subject headings:
Puerto Rico--History--To 1898--Sources.
Puerto Rico--History--To 1898.
San Germán (P.R.)--History--Sources.
San Germán (P.R.)--History.
Harvard subject headings:
Puerto Rico--History--To 1898--Sources.
San Germán (P.R.)--History--Sources.
Princeton subject headings:
Puerto Rico--History--To 1898--Sources.
Puerto Rico--History--To 1898.
San Germán (P.R.)--History--Sources.
San Germán (P.R.)--History.