This is the discontinued A.R.E. Circulating File titled "Perpetual Motion Machine" (wrong name for such an interesting topic) which mentions some of the working devices Cayce consulted on. It contains the #195 and #4665 readings, total of 151 pages. The A.R.E. library discontinued this booklet because according to the librarian at the time, "It was controversial." Can you imagine such a statement? Anyhow I saved the last copy out of their trash can. This may well be the only known copy in existence.