Here are some of the noteworthy resources and references that are foundational to this research.
A sexological exploration of intimate human-spirit relationships as representing forms of sexual orientations and behaviors deserving of recognition, understanding, and acceptance. Curated by sexologist and researcher Dr. Amy Marsh. https://spirituintimacy.com
Ida Craddock was an early 20th century sexologist and independent researcher who was married to an angel. Her research was foundational to many sex magick practices later developed by 20th century occultists. https://www.idacraddock.com/
Bowie, Fiona.. 2010. “Methods for Studying the Paranormal (and Who Says What is Normal Anyway?).” Paranthropology: Journal of Anthropological Approaches to the Paranormal 1 (1): 4-6.
Collins, John. 2008. “The Sons of God and the Daughters of Men.” In Sacred Marriages: The Divine-Human Sexual Metaphor from Sumer to Early Christianity, edited by Marti Nissinen and Risto Uro, 259–74. Winona Lake, IN: Eisenbrauns.
D'aoust, Maja. 2019. Familiars in Witchcraft: Supernatural Guardians in the Magical Traditions of the World. Rochester, VT: Destiny Books.
Donnelly, Dorothy. 1982. “The Sexual Mystic: Embodied Spirituality.” In The Feminist Mystic, And Other Essays on Women and Spirituality, edited by Mary E. Giles, 120–42. New York: Crossroad.
Eliade, Mircea.. 1977. “Mystical Marriage of a Siberian (Goldi) Shaman.” In From Primitives to Zen: A Thematic Sourcebook of the History of Religion, 437–8, New York, NY: Harper & Row.
Espinoza, Yalila. 2013. “The Erotic Intelligence of Plants: A Heuristic Inquiry of Women's Sexual/Spiritual Experiences with Sacred Amazonian Plant Teachers.” PhD diss., California Institute of Integral Studies.
Filan, Kenaz. (2004) 2013. “I married a Lwa: The sacred nuptials of Haitian Vodou.” Witches of the Craft, January 12, 2013. https://witchesofthecraft.com/2013/01/12/i-married-a-iwa-the-sacrad-nuptials-of-haitian-vodou/
Foor, Daniel. 2002. Animist Psychology: Healing Self and Culture Through the Path of Relationship. Self-published ebook.
Gibson, H. N. 1953. “The Offspring of the Human-Faery Marriage.” Folklore 64, no. 1 (March): 282–85.
Green, Richard F. 2016. Elf Queens and Holy Friars: Fairy Beliefs and the Medieval Church. Philadelphia: University of Pennsylvania Press.
Herbert, Máire. 1992. “Goddess and King: The Sacred Marriage in Early Ireland.” In Women and Sovereignty, edited by Louise Olga Fradenburg, 265–75. Edinburgh: Edinburgh University Press.
Herodotus. 1920. Histories. Book 1. Translated by A. D. Godley. Cambridge: Harvard University Press.
Hunter, Jack. 2010. Paranthropology: Journal of Anthropological Approaches to the Paranormal 1 (1): 2–3.
Jung, Carl Gustav. 2009. The Red Book: Liber Novus. Edited by Sonu Shamsadani. Translated by Mark Kyburz and John Peck. New York: W. W. Norton.
Lama Yeshe. 1987. Introduction to Tantra: The Transformation of Desire. Edited by Jonathan Landaw. Somerville: Wisdom Publications.
Lapinkivi, Pirjo. 2008. “The Sumerian Sacred Marriage and Its Aftermath in Later Sources.” In Sacred Marriages: The Divine-Human Sexual Metaphor from Sumer to Early Christianity, edited by Marti Nissinen and Risto Uro, 7–42. Winona Lake, IN: Eisenbrauns.
Marglin, Frédérique Apffel. 1985. Wives of the God-King: The Rituals of the Devadasi of Puri. Oxford: Oxford University Press.
McCarthy Brown, Karen. 1991. Mama Lola: A Vodou Priestess in Brooklyn. Berkeley: University of California Press.
Mennesson-Rigaud, Odette. 1953. “Notes on Two Marriages with Voudoun Loa.” In Divine Horsemen: The Living Gods of Haiti, by Maya Deren, 263–79. New York: Thames and Hudson.
Nissinen, Marti, and Risto Uro. 2008. Sacred Marriages: The Divine-Human Sexual Metaphor from Sumer to Early Christianity. Winona Lake, IN: Eisenbrauns.
Plato. n.d. “on the Daimon, between god and man.” Symposium, 202b–203a.
Pope Francis. (2018, July 4). “Ecclesiae Sponsae Imago” on the “Ordo Virginum” (Papal instruction). Vatican City: Holy See Press Office.
Radin, Dean. 2018. Real Magic: Ancient Wisdom, Modern Science, and a Guide to the Secret Power of the Universe. New York: Harmony Books.
René, Georges, and Marilyn Houlberg. 1995. “My Double Mystical Marriages to Two Goddessess of Love.” In Sacred Arts of Haitian Vodou, edited by Donald J. Cosentino, 287–99. Los Angeles: UCLA Fowler Museum of Cultural History.
Rigoglioso, Marguerite. 2009. The Cult of Divine Birth in Ancient Greece. New York: Palgrave Macmillan.
Sarbacker, Stuart Ray. 2011. “Indo-Tibetan Tantrism as Spirit Marriage.” In Perceiving the Divine through the Human Body: Mystical Sensuality, edited by Thomas Cattoi and June McDaniel, 29–44. New York: Palgrave Macmillan.
Schwartze, Lucas J. 2010. “Grave Vows: A Cross-Cultural Examination of the Varying Forms of Ghost Marriage among Five Societies.” Nebraska Anthropologist 60.
Sprinkle, Annie and Beth Stephens. 2021. Assuming the Ecosexual Position: The Earth as Lover. Minneapolis: University of Minnesota Press.
Teppo, Saana. 2008. “Sacred Marriage and the Devotees of Ištar.” In Sacred Marriages: The Divine-Human Sexual Metaphor from Sumer to Early Christianity, edited by Marti Nissinen and Risto Uro, 75–92. Winona Lake, IN: Eisenbrauns.
Topley, Marjorie. 1956. “Ghost Marriages among the Singapore Chinese: A Further Note.” Man 56 (May): 71–72.
Tyson, Donald. 2000. Sexual Alchemy: Magical Intercourse with Spirits. St. Paul, MN: Llewellyn.
Walker, Polly. 2013. “Research in Relationship with Humans, the Spirit World, and the Natural World.” In Indigenous Pathways into Social Research: Voices of a New Generation, edited by Donna M. Mertens, Fiona Cram, and Bagele Chilisa, 299–316. Walnut Creek, CA: Left Coast Press.
Wilby, Emma. 2005. Cunning Folk and Familiar Spirits: Shamanistic Visionary Traditions in Early Modern Brithsh Witchcraft and Magic. Brighton, UK: Sussex Academic Press.