"The Ar nDraiocht Fein Dedicant Program" - ed. Ian Corrigan, updated by Heather "Vedis" Koerner
"The ADF Dedicant Program Through the Wheel of the Year: A Working Guide" - Michael J. Dangler
"The Solitary Druid: Walking the Path of Wisdom and Spirit" - Rev. Robert Lee (Skip) Ellison
The Encyclopaedia of Celtic Wisdom: A Celtic Shaman's Sourcebook" - Caitlin & John Matthews
"The Fairy-Faith in Celtic Countries" - W.G. Evans-Wentz
"Celtic Lore: The History of the Druids and Their Timeless Traditions" - Ward Rutherford
"A Green History of the World: The Environment and the Collapse of Great Civilizations" - Clive Ponting
"A History of Pagan Europe" - Prudence Jones & Nigel Pennick
"In Search of the Indo-Europeans: Language, Archaeology, and Myth" - J.P. Mallory