1917 - Tablet of the Divine Plan to the Baha'i's of the Western States Revealed
Revealed on February 15, 1917,in Bahá'u'lláh's room at the house of Abbud in 'Akká, and addressed to the Bahá'ís of the eleven Western States of the United States: New Mexico, Colorado, Arizona, Nevada,California, Wyoming, Utah, Montana,Idaho, Oregon and Washington
(Abdu'l-Baha, Tablets of the Divine Plan, p. 83)
1957 - Auto-Suggestion or Hypnotism
"What comes under the heading of psychic practices "Abdu'l-Bahá has warned us against; but any form of auto-suggestion or hypnotism which is used by medical science and by properly qualified physicians we are free to take advantage of, if we feel that the doctor using such practices is qualified and will not abuse his rights."
(From a letter written on behalf of the Guardian of an individual believer, February 15, 1957: Spiritualism and Psychic Phenomena, February 14, 1974, p. 2) (Compilations, Lights of Guidance, p. 288)