Columbia subject headings:
Harvard subject headings:
Anthroposophists--Germany--Biography.
Authors, German--19th century--Biography
Authors, German--20th century--Biography
Morgenstern, Christian, 1871-1914
Morgenstern, Christian, 1871-1914--Friends and associates.
Steiner, Rudolf, 1861-1925
Princeton subject headings:
Anthroposophists--Germany--Biography.
Authors, German--19th century--Biography.
Authors, German--20th century--Biography.
Morgenstern, Christian, 1871-1914--Friends and associates.
Morgenstern, Christian, 1871-1914.
Steiner, Rudolf, 1861-1925.