Columbia subject headings:
Coaching (Transportation)--Texas--History--19th century.
El Paso (Tex.)--History.
Postal service--Texas--History--19th century.
San Antonio (Tex.)--History.
Harvard subject headings:
Coaching (Transportation)--Texas--History--19th century.
El Paso (Tex.)--History--19th century.
El Paso (Tex.)--History.
Postal service--Texas--History--19th century.
San Antonio (Tex.)--History
San Antonio (Tex.)--History--19th century.
Princeton subject headings:
Coaching (Transportation)--Texas--History--19th century.
El Paso (Tex.)--History.
Postal service--Texas--History--19th century.
San Antonio (Tex.)--History.