Columbia subject headings:
German Americans--Pennsylvania--Biography.
Organ (Musical instrument)--Construction--Pennsylvania.
Organ (Musical instrument)--Pennsylvania--History.
Organ builders--Pennsylvania--Biography.
Organ builders--Pennsylvania.
Pennsylvania Dutch--Biography.
Pennsylvania--Church history.
Harvard subject headings:
German Americans--Pennsylvania--Biography.
Organ (Musical instrument)--Construction--Pennsylvania.
Organ (Musical instrument)--Pennsylvania--History.
Organ builders--Pennsylvania--Biography.
Organ builders--Pennsylvania.
Pennsylvania Dutch--Biography.
Pennsylvania--Church history.
Princeton subject headings:
Organ (Musical instrument)--Construction--Pennsylvania.
Organ builders--Pennsylvania.
Pennsylvania--Church history.