Columbia subject headings:
Harvard subject headings:
Railroads--Germany--Prussia--History.
Railroads--Germany--Saxony--History.
Transportation and state--Germany--Prussia.
Transportation and state--Germany--Saxony.
Princeton subject headings:
Railroads--Germany--Prussia--History.
Railroads--Germany--Saxony--History.
Transportation and state--Germany--Prussia.
Transportation and state--Germany--Saxony.