Columbia subject headings:
Harvard subject headings:
Neuchâtel (Switzerland : Canton)--Foreign relations--Germany--Prussia.
Neuchâtel (Switzerland : Canton)--History.
Prussia (Germany)--Foreign relations--Switzerland--Neuchâtel (Canton)
Princeton subject headings:
Neuchâtel (Switzerland : Canton)--History.
Prussia (Germany)--Foreign relations--Switzerland.
Switzerland--Foreign relations--Germany--Prussia.