Kraft durch Ruhe 1915

Sommer, E. – Strength Through Rest (Kraft durch Ruhe: Wie man nach Belieben einschläft und die Schlaflosigkeit bemeistert) Oranienburg–Berlin: Orania-Verlag,1915. 8vo. 69[1] pp. Illustrated with 15 photographic plates. Original printed wrappers. Early 20th-century German guide to relaxation, posture, and sleep therapy, combining text with staged photographic demonstrations of bodily tension and release. Wrappers worn at edges, 1-cm tear at lower spine, no loss, light creasing and soiling; internally clean and sound. Good condition. InvHo6