Alister Hardy Trust: Religious Experience Research Centre: Interdisciplinary centre based at the University of Wales. Includes details of current and previous research projects, forthcoming events, and an MA course studying religious and spiritual experiences.
Neurology of Spiritual Experiences: Articles on spiritual experience and magnetic signal brain stimulation by one of Michael Persinger's students.
Psychology of Religious Experience: Transcript from the Thinking Allowed TV series of Jeffrey Mishlove interviewing Huston Smith.
TASTE - The Archives of Scientists' Transcendent Experiences: Collection of accounts of experiences. New accounts can be added online.
The Varieties of Religious Experience: Full text of the celebrated book by William James, originally published in 1902.