Altogether7 booklets - "Branch 1-6" of Elmer Knowles's "Complete System of Personal Influence and Healing (Parts of a Correspondence Course) + "Special Lessons and Exercises for the Development of Memory and the power of Concentration". The 6 "Branches" booklets all have illustrated grey/black covers; the "Special Lessons " has just grey soft covers with a black title; all 7 booklets have varying degrees of rusting staples along the cover spines. In more detail: Branch 1 " Primary Course": covers foxed/blemished/minutely "dog-eared". 14pp. Pages blemished & foxed with pencil annotations. Branch 2 "Knowles Course on Hypnotism, Telepathy, Personal Magnetism and Personal Influence": covers foxed/blemished/mildly creased & "dog-eared". 41pp., including b/w illustrations. The odd blemish & a little foxing with a very occasional pencil annotation. Corners mildly thumbed. Branch 3 "Knowles Advanced Method in Self Treatment For the Cure of Diseases and Habits. Embracing the use of The Radio Hypnotic Crystal": covers foxed/slightly/blemished/mildly "dog-eared". 18pp. A few "dog-ears". The odd blemish with a very occasional pencil annotation. Branch 4 "Knowles Scientific Course on Magnetic Healing, Absent Treatment, Treatment by Suggestion. Embracing the use of The Radio Hypnotic Crystal": covers lightly foxed/slightly blemished/evidence of browning. 22pp., including b/w illustrations. A trace of foxing. Branch 5 "Knowles Rapid Method of Accurate Character Reading". Embracing Physiognomy, Phrenology, Graphology": covers lightly foxed/ blemished/creased/chipped. 27pp., including b/w illustrations/"Figures"/handwriting "Specimens". Some, sometimes large, "dog-ears". Branch 6 "Hindoo and Oriental Methods In Hypnotism, Telepathy, Concentration , Magnetic Healing/Magic and the Wonders of the Orient" by Swami Ramayandas (Hindoo Priest): covers lightly foxed/blemished/beginning to brown/mildly creased/chipped. 15pp., including b/w illustrations. Stain on inside front cover. Blemishes to vertical page edges. "Special Lessons ." booklet: covers foxed/blemished/creased/beginning to brown. 16pp., including b/w illustrations. Some page foxing/blemishes/creasing. Overall condition, Fair.