Personal Opinion
Science and Sanity has it, 'The connection between the study of psychiatry and the study of mathematics and the foundations of mathematics is very instructive', etc. (page lxxxii).
William Alanson White, psychiatrist, had some understanding of Korzybski's ideas — the two had even co-worked for some time. Among others, he had contributed the formulations about the 'false knowledge' which are presently found in another work, although they were most likely re-discovered.
There may have been a number of 'psychiatrists' who, even if not having done much towards sanity at large, at least were 'intellectually' honest — whose writings may be reliable on the matters of the historic fact. For example, Dr. Kelley, whose book has been quoted recently by other authors. This may of may not be disregarded ; it does not seem called for to link such literature with the present-day psychiatric problems.
Dr. Kelley's book shows that the author was not engaging in the mere mystifying of the reader (unwittingly or deliberately) — rather unlike the most of the present-day literature on these subjects
The connection with mathematics would be present on the levels of the theoretical foundations of a science of soul-healing.
On this subject, Korzybski had had some modest success with some psychiatrists, but not, so far as I know, with the mathematicians — with one possible and notable exception.
In a way the sort of 'marriage' of the mathematics and the mental philosophy had been achieved by Hubbard, an engineer and a writer. His original works do contain a theory of sanity — and demonstrably so. While it is not the aim of the article here to persuaded the readers to the soundness of this, or any, theory, I would remark that the original editions of the writings by this author can be, or become, valuable possessions.
WPT