Doctor Strange first appeared in Strange Tales #110, cover-dated July 1963. Lee cited the Chandu the Magician radio program (created by Harry Earnshaw and Raymond Morgan, airing 1931-36) as the inspiration, per radio historian John Dunning and Marvel historian Les Daniels. Ditko's psychedelic dimension art made the book a campus and counterculture favorite.
The Ancient One in the Himalayas, the Crimson Bands, the Eye of Agamotto: the strip built a full occult cosmology from Theosophy-flavored parts. Readers tripping in Greenwich Village treated the art as a map; Ditko, an Objectivist, reportedly treated it as a job. The split between authorial intent and reader initiation is the story.
Practicing occultists have claimed Doctor Strange served as an unintended gateway: kids who learned 'astral projection' from the comic went looking for the real manuals. Some modern magicians credit the character as their first contact with esoteric practice.
If a generation learned the vocabulary of astral travel from a comic inspired by a radio serial, who was initiating whom?