Manly Palmer Hall, 1901 to 1990, born Peterborough, Ontario, moved to Los Angeles at 18. The Lost Keys of Freemasonry (1923) predated his lodge membership by thirty years, the preface confesses his only contact was public books. The Secret Teachings of All Ages (1928), issued when he was 27, remains the standard one-volume codex of Masonic, Hermetic, Qabbalistic, and Rosicrucian symbolism, with John Augustus Knapp's plates. In 1934 he founded the Philosophical Research Society in Los Angeles, which still publishes him, and across a seventy-year career he gave thousands of lectures and over 150 volumes.
Hall's codex did not just describe the traditions, it re-sorted them: his correspondences, Egypt beside Masonry beside Kabbalah, became the default map for everyone after, so much of what modern readers think the mysteries always taught is actually the 1928 arrangement. The critics' term is armchair occultism, immense reading, no lineage; the counter is that lineages are how the teachings get locked, and Hall's whole mission was the locksmith's. The Secret Destiny of America (1944) supplied the Masonic-founding myth the control wing still trades in.
The claim: Hall proved the archive's founding premise, that the mysteries survive as literature, not lineage, that a young man with enough library access could reconstruct the whole symbolic system and end up more cited than any initiated master, initiation being, at bottom, a reading list with a dress code. Verdict: the citation record supports it. The counter stands on the archive's other premise, that some traditions are guarded because they work, and the ones that work do not publish. Hall compiled everything that was written down. The file notes, with respect, that he could only compile what had been.
If the great book of the mysteries was written by a young man who had read everything and joined nothing, is compilation itself the initiation?