The Phenomena of Astral Projection,  the book, a modern classic about what today is generally referred to as out-of-body experiences, was published in 1951 and consisted of discussions of the “doctrine of astral projection,” and of presentations of cases.

Today there are many books about out-of-body experiences, but this was not the case when The Phenomena of Astral Projection appeared. Muldoon and Carrington’s work became an important reference work that presented many cases.

 “Muldoon and Carrington believe ‘astral projection’ implies that the mind is independent of the physical body, something that supports the idea of an etheric brain. This, they write, ‘certainly seems but a short step to the acceptance of an etheric body, separate and apart from the physical, which body we may inhabit at death, and which constitutes the vehicle of the mind in astral projections.’ ”

Muldoon and Carrington discussed evidence for the existence of a subtle body:

“First, there is the massive weight of human belief and testimony, from the earliest times to our own day, in all parts of the world, and among civilized and uncivilized peoples. Second, we have those cases of apparitions in which the phantom-form seems to exhibit a mind of its own—often imparting information unknown to the seer at the time, but afterwards verified. Third, we have those cases in which material effects are apparently produced by the phantom, or its image appears upon photographic plates. Fourth, we have instances of materialization, at séances… Fifth, we have cases of astral projection, in which the subject sees his own phantom body, and is occasionally seen by others. In these last instances especially, we have evidence that the phantom form possesses a mind of its own, separate and distinct from the physical brain and body, which latter may be seen resting upon the bed. The cumulative mass of such testimony is, we submit, most impressive, and gives us the right to believe that such a ‘spiritual body’ exists—as St. Paul long ago stated.”

https://www.pastliveshypnosis.co.uk/

https://www.patreon.com/ourparanormalafterlife

My book 'Verified Near Death Experiences'  https://www.amazon.com/dp/B0DXKRGDFP