Alfred Richard Orage: Wikipedia's biography of his life.
Anderson, Margaret C.: Archives finding aid. Letters, photos and manuscripts.
Fritz Peters: Dedicated to Fritz Peters (1913-1979), Gurdjieff memoirist and American novelist.
Jean Toomer: Wikipedia's biography of his life.
Jeanne de Salzmann: Wikipedia's biography of her life.
John G. Bennett: Wikipedia's biography of his life.
Margaret Caroline Anderson: Wikipedia's biography of her life.
René Daumal: Wikipedia's biography of his life.
The Thomas de Hartmann Papers: Documents de Hartmann's life and work through musical sketches, manuscript scores, and printed music and contains materials relating to G.I. Gurdjieff.
Thomas and Olga de Hartmann: Wikipedia's Very short biography of the Thomas and Olga de Hartmann