1. [Dr. S. Adolphus Knopf] Publication: 1924 Subject(s): Knopf, S. Adolphus (Sigard Adolphus), 1857-1940.
2. [Dr. S. Adolphus Knopf] Publication: [1912-1924?] Subject(s): Knopf, S. Adolphus (Sigard Adolphus), 1857-1940.