Medical indoor gymnastics, or, A system of hygienic exercises for home use to be practised anywhere without apparatus or assistance by young and old of either sex, for the preservation of health and general activity / by D. G. M. Schreber ; revised and supplemented by Rudolf Graefe ; translated from the 26th German edition by Herbert A. Day.

Licence: Public Domain Mark

Credit: Medical indoor gymnastics, or, A system of hygienic exercises for home use to be practised anywhere without apparatus or assistance by young and old of either sex, for the preservation of health and general activity / by D. G. M. Schreber ; revised and supplemented by Rudolf Graefe ; translated from the 26th German edition by Herbert A. Day. Source: Wellcome Collection.