The Development of Higher Clairvoyance is a book written by Irving S. Cooper that delves into the concept of clairvoyance and how it can be developed to a higher level. The book explores various techniques and exercises that can be used to enhance one's clairvoyant abilities, including meditation, visualization, and psychic training. It also discusses the different types of clairvoyance, such as remote viewing, aura reading, and psychometry, and provides...