Start with high-confidence celtic spirituality books, then narrow by subgenre or adjacent topics.
Goddesses in Everywoman: Thirtieth Anniversary Edition
Jean Shinoda Bolen
The Celtic Way of Prayer
Esther De Waal
Steampunk Faerie Tarot
Pamela Chen, Ashley Cassaday
The Pagan Book of Days
Nigel Pennick
Encyclopedia of Goddesses and Heroines
Patricia Monaghan
Inner Practices for the Twelve Nights of Yuletide
Anne Stallkamp, Werner Hartung
The Gothic Steampunk Tarot
Liz Dean, Bev Speight
