The ``Tibetans'' was published by Peter Kelder in 1939, and republished in 1975. The practice was re-introduced by Christopher S. Kilham in 1994, with his publication ``The Five Tibetans''. There is little historical or cultural evidence to support Kelder's booklet. Most scholars of Tibet and authentic lineage holders state his publications are works of fiction (in the same vein as Lobsang Rampa).
Kelder
Lobsang Rampa