|Sir Arthur Conan Doyle on archive.org|
(this is a screenshot; does not link)
(Speaking of which, book update: My Metaphysical Odyssey into the Mexican Revolution: Francisco I. Madero and His Secret Book, Spiritist Manual, is out in Kindle and still.... ayyy.... still... almost ready for paperback. Any day now, any day. And the Spanish edition, translated by Agustín Cadena as Odisea metafísica hacia la Revolución Mexicana, Francisco I. Madero y su libro secreto, Manual espírita, my editor tells me, will be available in mid-February.)
Sir Arthur Conan Doyle was also the author of The History of Spiritualism (free ebook on archive.org).
More about archive.org and rare books anon.
***UPDATE: A couple of interesting pieces in Lapham's Quarterly:
Miles Klee Sherlock Holmes in Fairyland
A.N. Denver The Father and Son Who Belived in Fairies