Steve Roberts - Zhine Tibetan Dream Yoga
Alexander Macgregor - Highland Superstitions Connected With the Druids Fairies Witchcraft
William Alexander Craigie - Religion of Ancient Scandinavia
Louis Claude De Saint Martin - La Respiration (1893,in French)
Correllian Times Emagazine - Issue 07 March 2007
Aleister Crowley - Diary and Notes 25th March 1900 to 18th April 1900