Columbia subject headings:
Bund Deutscher Orgelbaumeister.
Organ (Musical instrument)--Construction--Germany.
Harvard subject headings:
Bund Deutscher Orgelbaumeister.
Organ (Musical instrument)--Construction--Germany.
Organ builders--Germany.
Princeton subject headings:
Bund Deutscher Orgelbaumeister.
Organ (Musical instrument)--Construction--Germany.
Organ builders--Germany.