The Mahatma Letters to A.P. Sinnett

Dr H. N. Stokes called the book "the most authoritative work of a theosophical nature ever made accessible to the public.

[3]"[4] A member of the SPR and a research worker of paranormal phenomena Richard Hodgson wrote in The Age: "I was enabled while in India to secure various Mahatma documents for my own examination, and after a minute and prolonged comparison of these with Madame Blavatsky's handwriting, I have not the slightest doubt that all the documents which I thus had the opportunity of examining were, with the exception of one, written by Madame Blavatsky.

writing possessed by Mr. Sinnett is particularly important, because it is upon this that Esoteric Buddhism, with its large claims, is confessedly founded; and Mr. Netherclift, the calligraphic expert, has confidently expressed his opinion that the K.H.

"[6]Leo Klejn wrote that Blavatsky's reputation was "seriously damaged after due consideration of this occult phenomena by English psychologists".

[7] A historian of esotericism K. Paul Johnson speculates that the "Masters" that Blavatsky wrote about and produced letters from were actually idealizations[8] of people who were her mentors.