Phineas Parkhurst Quimby (1802-1866). Although most widely known as a spiritual healer, P. P. Quimby also worked as a clockmaker, silver and goldsmith, jeweler, merchant, and as a photographer making an early form of photographs known as daguerreotypes. He was also an inventor and received at least four Letters Patent. President Andrew Jackson's signature appears on two of those patents. Around 1838 he became fascinated with mesmerism, (an early form of hypnosis) and went on to become an extraordinary mesmerist himself, conducting experiments and giving public demonstrations from 1843 through 1847. Based on his experiments and personal experiences, he concluded there were greater spiritual truths at work beyond the "Science of Mesmer," and it became his life's calling to explore these principles for the healing benefit of the sick and suffering.