Historical; not practised continuously

This category holds the organised initiatory bodies of the esoteric world: Freemasonry, the Rosicrucians, the Hermetic Order of the Golden Dawn, the Ordo Templi Orientis and others. What defines them is form: membership admitted through initiation, teaching structured in degrees, and often a measure of secrecy about their rites and lore.

Each entry records, so far as the record allows, when and where the body was founded, what it taught or practised, how it was organised, and its documented history, keeping to what can be established.

Some are held here on other grounds, and it is better to say so than to let the definition stretch to cover them. The Knights Templar were a medieval Catholic military order, founded about 1119 and dissolved by papal bull in 1312, with no graded esoteric curriculum of any kind; they are here because Freemasonry and its offshoots later claimed descent from them, a claim the record does not support and which the entry treats as legend rather than history. Skull and Bones is a senior society founded at Yale in 1832: closed and initiatory, and nothing more than that. Neither has a better home in the atlas, and both are kept here with the mismatch stated rather than hidden.

Secret societies attract claims, of great antiquity, hidden influence or sinister purpose, from members and opponents alike, and the atlas is careful to separate documented history from origin-legend and from conspiracy theory. Many orders claim descent from ancient sources the evidence does not support; the Golden Dawn's founding documents, for instance, and the true age of Rosicrucianism are matters where scholarship and tradition part.

The entries describe rather than expose or defend, noting where an order's own account of its origins is unsupported and where genuine controversy is documented. The related mystery cults of antiquity and modern new religious movements are treated under their own categories.