Columbia subject headings:
Ladegast, Friedrich, 1818-1905.
Organ (Musical instrument)--Germany--Saxony-Anhalt.
Harvard subject headings:
Ladegast, Friedrich, 1818-1905
Organ (Musical instrument)--Germany--Saxony-Anhalt.
Princeton subject headings:
Ladegast, Friedrich, 1818-1905.
Organ (Musical instrument)--Germany--Saxony-Anhalt.