Elmer S. Prather

From Kook Science

Elmer Sidney Prather
Elmer S Prather - 1920 passport.png

Portrait photo of Elmer Sidney Prather (1920)

Born 19 January 1872(1872-01-19) [1]
Beatrice, Gage, Nebraska
Died 27 April 1939 (67) [2][3]
Ozoir-la-Ferrière, Seine-et-Marne, France
Nationality American
Known for Knowles Radio-Hypnotic Crystal, "Psycho Success Club", mail-order self-help courses
Spouse(s) Abby Beatrice Giffin (1877)

Elmer Sidney Prather (January 19, 1872 - September 14, 1877), also known as Professor Elmer Ellsworth Knowles, was an American author, lecturer, and mail-order peddler of correspondence courses and nostrums based on psychic and hypnotic powers, including his Knowles Radio-Hypnotic Crystal.


Selected Bibliography

  • Professor Elmer E. Knowles' Complete System of Personal Influence and Healing (Six Complete Branches) (National Institute of Sciences, 1899)
    • 1: Complete System of Personal Influence and Healing
    • 2: Personal Magnetism, Personal Influence
    • 3: Self Treatment and the Cure of Diseases and Habits by Employing the Radio-Hypnotic Crystal
    • 4: Magnetic Healing, Distance Healing, Treatment by Suggestion
    • 5: Reading of the Character, including the Science of Physiognomy, Phrenology, and Graphology
    • 6: Hindu and Oriental Methods of Hypnotism, Telepathy, Concentration, Magnetic Healing, Magic and Wonders of the East
  • Personal Power: Avenues to Its Acquisition (Progress League, 1919)


  1. "United States Passport Applications, 1795-1925," database with images, FamilySearch ( : accessed 31 October 2015), Elmer Sidney Prather, 1920; citing Passport Application, New York, United States, source certificate #168202, Passport Applications, January 2, 1906 - March 31, 1925, 1061, NARA microfilm publications M1490 and M1372 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,637,676.
  2. "Estate notice for Elmer S. Prather". The London Gazette (34833): p. 2343. 1940-04-19. 
  3. "LINCOLN WOMAN TO SHARE IN $560,000 ESTATE NEW YORK". The Lincoln Star (Lincoln, Nebraska): p. 1. 1943-05-13. "A Lincoln. Neb., woman will share a beneficiary in the estate of Elmer S. Prather, a lecturer on telepathy and astrology, known as "Professor Knowles," papers filed in Surrogate court here disclosed. Prather left a gross estate of $560,548 with a net value of $530,744 when he died in France, April 27, 1939. The beneficiaries are his wife, Mrs. A. Beatrice Prather of Rochester, Minn., and his sister, Mrs. Georgia Walker, of Lincoln, Neb." 
  4. "WILL FORM A COLONY ON SOUTH SEA ISLAND - New York Socialist Induces Five Hundred Persons to Go With Him - PLANS FOR REPUBLIC - Entire Party Will Sail From San Francisco Early Next Year", San Francisco Call 103 (13): 4, 1907-12-13,