Columbia subject headings:
Harvard subject headings:
Debt--Germany--Prussia--History.
Military religious orders--Germany--Prussia--History--Sources.
Prussia (Germany)--History--Sources.
Teutonic Knights--Germany--Prussia--Accounting--History--Sources.
Teutonic Knights--Germany--Prussia--Finance--History--Sources.
Teutonic Knights--Germany--Prussia--Records and correspondence.
Teutonic Knights--History--Sources.
Princeton subject headings:
Debt--Germany--Prussia--History.
Military religious orders--Germany--Prussia--History--Sources.
Prussia (Germany)--History--Sources.
Teutonic Knights--Germany--Prussia--Accounting--History--Sources.
Teutonic Knights--Germany--Prussia--Finance--History--Sources.
Teutonic Knights--Germany--Prussia--Records and correspondence.
Teutonic Knights--History--Sources.