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Home Essays Collections Explore Sources Shop Support PDR About Blog Search Search The Public Domain Review Introducing PDR Press Minis, our new pocket-sized book series Pre-sale now open — 25% off until April 29th Order now PDR Press Minis our new book series Pre-sale now open 25% off until April 29 Order Now Essays Magic by Return of Post How Mail Order Delivered the Occult By Allan Johnson What allowed occultism to blossom in the United States at the turn of the 20th century? Linotype machines, cheap pulp paper, and newly improved postal networks. Allan Johnson investigates the forgotten history and (still living) world of mail-order magic. Published April 22, 2026 Scroll through the whole page to download all images before printing. “Force accumulated always attracts, force released is wasted and neutralized”, diagram from A Course in Personal Magnetism: Self-Control and the Development of Character , the first part of the mail-order “Series ‘B’”, published by Sydney Flower’s Psychic Research Company in 1901 — Source . In the early twentieth century, after the rationalising forces of the Enlightenment had supposedly recast spiritual life through reason, curious advertisements began to appear in popular periodicals ranging from Popular Mechanics to Weird Tales , offering arcane occult knowledge sent directly to the reader’s door. Typical of their genre, a 1902 notice in the Chicago Tribune introduced the De Laurence Institute of Hypnotism, which promised to “[unfold] the mysterious law of all personal magnetism, occult force, and influence”, while, elsewhere, the Occult Digest announced the services of the Los Angeles–based Brotherhood of Light, who had on offer “correspondence courses in all branches of occult science” by return of post. 1 Sending away for the secrets of the ages was, it seemed, disarmingly simple, part and parcel of the colossal mail-order industry that had emerged during the Second Industrial Revolution of the late-nineteenth and early twentieth centuries. The rise of mail-order magic was, in many ways, both an upshot and a parody of modernity. America’s long nineteenth century had already seen its fair share of religious transformation, with movements like Mormonism, Seventh-day Adventism, Christian Science, and the Shakers, among others, emerging from the spiritual fervour of the Second Great Awakening, each grappling in their own way with the relationship between the individual and society at large. In 1917, German sociologist Max Weber famously argued that “the fate of our times is characterized by rationalization and intellectualization and, above all, by the ‘disenchantment of the world’”. 2 To Weber’s mind, the progress of the modern world had eradicated the need for spiritual practice, with the purposes it had once held now being carried by the cold logics of bureaucracy, science, and instrumental reason. From the vantage point of hindsight, however, Weber’s Entzauberung thesis seems less terminal than he had imagined. In a time increasingly shaped by Taylorist factories and scientific materialism, Weber ultimately misread modernity, and his account of disenchantment confused modernity’s growing spiritual liberalism with large-scale secularisation. That is, Weber believed that the declining adherence to Christianity (which was unmistakable) signalled that the numinous had faded from modern life (which couldn’t have been further from the truth). Modernity and scientific materialism didn’t really get rid of spiritual practice as much as abstract it from an inherited, communal framework. What modernity had in fact created was a radical redistribution of belief, in which the rationalist currents presumed to have extinguished faith in powers and presences beyond oneself became the very means by which one could learn about these otherworldly forces from the privacy of one’s own home. Scroll through the whole page to download all images before printing. Cover of an occult and spiritual books catalogue published by L. W. de Laurence’s mail-order company, 1931 — Source . Scroll through the whole page to download all images before printing. Advertisement for “temple incense” sold by L. W. de Laurence’s mail-order company, 1931 — Source . The new material conditions of postal exchange — linotype machines, cheap pulp paper, and rapidly improving and expanding delivery networks — made the recondite world of the occult ultra-targeted and at a scale never before seen. The consumer now got to choose if they wanted to practice meditation, astrology, tarot, Mesmerism, Kabbalah, Rosicrucianism, something even more arcane, or a unique combination of them all. There was no fixed template for how the instruction unfolded, but most would-be adherents began their affiliation by responding to the offer of a free sample lesson or catalogue from a magazine ad. From there, they could subscribe to courses whose scale, duration, and cost varied greatly. To give just a single example, lessons from Psychiana, one of the largest esoteric correspondence schools of the 1930s by subscriber numbers, cost around $1 each (about $20 in today’s currency) and were purchased in groups of ten or twenty lessons, with one lesson posted weekly. For students of Psychiana, as well as those who sent away to the many other smaller providers, completion of these introductory sequences usually then opened onto further tiers of instruction or advanced courses, with payment typically remitted in cash, sometimes in instalments or in arrears. One of mail-order magic’s early innovators was Sydney Flower, the shadowy Chicago-based publisher behind The Hypnotic Magazine , The Yogi , and New Thought (the latter co-edited with William Walker Atkinson, best known as the presumed author of 1908’s Kybalion ), as well as a startling range of orderable courses, through his Psychic Research Company and Magnetic Publishing Company, with titles such as A Course of Instruction in Magnetic Healing in Five Parts and A Course of Instruction in the Development of Power through Clairvoyance . Scroll through the whole page to download all images before printing. Cover of the mail-order Course in Personal Magnetism: Self-Control and the Development of Character , the first part of “Series ‘B’”, published by Sydney Flower’s Psychic Research Company in 1901 — Source . Scroll through the whole page to download all images before printing. Cover of the mail-order A Course of Instruction in Magnetic Healing , the fourth part of “Series ‘B’”, published by Sydney Flower’s Psychic Research Company in 1901 — Source . Scroll through the whole page to download all images before printing. Advertising testimonials from students supposedly pleased with the mail-order “Series ‘B’” courses offered by Sydney Flower’s Psychic Research Company — Source : IAPSOP (CC BY-NC). Flower emerges with almost no trace of a past, but by the time he arrived in Chicago at the turn of the century — where he would collaborate with Herbert Parkyn at the Chicago School of Psychology — America’s so-called second city had become the country’s undisputed hub of metaphysics and personal development, a cosmopolitan crossroads still reverberating with the hum of the 1893 World’s Parliament of Religions and the awe-inspiring appearances of Eastern gurus and spiritual teachers like Swami Vivekananda. Organised by a Swedenborgian lawyer and Unitarian minister, the Parliament assembled a diverse array of leaders from global religions in a landmark attempt to foster interfaith dialogue and introduce non-Christian traditions to American audiences. Flower quickly recognised that, alongside this lather of spiritual curiosity, Chicago’s industrial infrastructure and well-developed transportation links at the heart of a rapidly expanding country could be exploited for esoteric commerce. Scroll through the whole page to download all images before printing. Religious leaders at the 1893 World’s Parliament of Religions. From left to right: Virchand G