Columbia subject headings:
Harvard subject headings:
Beidler family.
Beidler, Franz W. (Franz Wilhelm), 1901-1981.
Bülow, Isolde von.
Wagner family.
Wagner, Cosima, 1837-1930.
Princeton subject headings:
Beidler family.
Beidler, Franz W. (Franz Wilhelm), 1901-1981.
Bülow, Isolde von.
Wagner family.
Wagner, Cosima, 1837-1930.