A signed copy by Harold Sherman turns this from a vintage manual into a collector?s piece with historic and personal value. His signature is not easy to come by, and signed metaphysical works from that era are especially sought after by collectors, authors, and spiritual historians. Unlock your intuitive potential with this rare Revised Edition of the ESP Manual by renowned psychic researcher Harold Sherman. This vintage spiral-bound workbook guides you through exercises in extrasensory perception, visualization, and subconscious programming, blending science, spiritual thought, and classic mid-century self-help psychology. Author: Harold Sherman Title: ESP Manual ? Revised Edition Format: Softcover, spiral bound Publisher: ESP Research Associates Foundation Year: 1981 Condition: (briefly describe here: e.g., clean interior, light cover wear, binding intact) Includes charts, diagrams, and instructional insights on: Conscious vs. subconscious mind Sensory input and mental image formation Developing intuitive and ESP abilities Mind training techniques used in early ESP research A unique find for collectors of: Vintage metaphysical books Parapsychology and psychic research Early self-development manuals 1970s spiritual and intuitive training materials Ships carefully packed and protected.