In 1908 Dora Menzler founded a school in Leipzig, Germany, for training gymnastics teachers. Her company moved from Leipzig to Hellerau (my home town, not). Her 1924 book “Physical Training of Women In Pictures and Words” with a cover by Ludwig Hohlwein is mate to another physical culture book covered by Hohlwein (see here).
Germany was was very active in the early 20th century physical culture thrust that had taken root in many industrialized countries. Hohlwein was long associated with the organic foods and fitness movements.