Columbia subject headings:
Authors, German--19th century--Biography.
Essig, Hermann, 1878-1918.
Harvard subject headings:
Authors, German--19th century--Biography
Essig, Hermann, 1878-1918.
Princeton subject headings:
Authors, German--19th century--Biography.
Authors, German--20th century--Biography.
Essig, Hermann, 1878-1918.