OK, here we go on the Campbell/Heinlein letters. The letters are copyrighted so I'll do my best to provide snips of note.
Letter dated Tuesday July 26, 1949 from Campbell to Heinlein. It's 8 pages long.
snips from throughout the letter:
"Ron Hubbard has been doing some highly important, original research, and is getting some extremely important results is psychiatric treatment. He's got a system of analysis that will do in five hours, a better job than the standard treatments do in 100 hours, and with it, has made some bewildering discoveries concerning the human brain and mind.
First, his techniques is an improved system of hypnotic analysis, using age-regression and revivification techniques."
"Ron has become convinced that there is no such thing as mental anguish, that the organism reacts solely to physical pain."
"Quite so. Ron's gotten transcriptions of what the doctors, nurses, and the mother said at birth."
"Semantics isn't, by any means, a sufficient term, Ron perfers perceptics---the proper interpretation of all sensory impressions."
"Ron's in a rather unique way in his work. You know the old saying, Physician, heal tyself; Ron, as you may remember as of 1944, was a fairly good case for a psychiatrist."
"Damit, the man's got something---and something big."
"In essence, it's the old, standard psychoanalysis technigue---finding the incident that started the business. The difference is that Ron is using deep hypnosis, which makes directly available the full memory files, which makes eidetic recall possible, instead of trying to get the conscious mind of the subject to find an incident which, by its very nature, the conscious mind tends strongly to avoid."
"I think Ron has, definitely, developed a highly important series of concepts, and an extremely useful technique."
Heinlein replies back 1 August 1949 with a one page letter.
Here is Heinleins response regarding Ron's work:
"Your letter was most interesting re Ron's forays in therapeutic pschology. I have heard from him several times about such activities and am much interested and have asked many questions---but your letter has been a dern sight more informative then his letters. But he has promised me galleys of his work."
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There many more letters I'll post.