Columbia subject headings:
Harvard subject headings:
Brownsville (Tex.)--History--Bibliography.
Brownsville (Tex.)--History.
Matamoros (Mexico)--History--Bibliography.
Matamoros (Mexico)--History.
Princeton subject headings:
Brownsville (Tex.)--History--Bibliography.
Brownsville (Tex.)--History.
Matamoros (Tamaulipas, Mexico)--History--Bibliography.
Matamoros (Tamaulipas, Mexico)--History.