Columbia subject headings:
Baghdad Railway--Finance--History.
Baghdad Railway--History.
Railroads--Middle East--Finance--History.
Railroads--Middle East--History.
Harvard subject headings:
Baghdad Railway--Finance--History.
Baghdad Railway--History.
Railroads--Middle East--Finance--History.
Railroads--Middle East--History.
Princeton subject headings:
Baghdad Railroad.
Germany--Foreign economic relations--Turkey.
Imperialism--Case studies.
Railroads--Middle East--Finance.
Railroads--Middle East--History.
Turkey--Foreign economic relations--Germany.