The Io-Triads; or, the Tenth Muse, wherein the origin, nature, and connection of the sacred symbols, sounds, words, ideas and things are discovered
Public domain
Eccentric 1773 treatise by the Welsh philologist Rowland Jones deriving sacred symbols from 'Io' triads and Platonic numbers, part of the eighteenth-century Celtic-primitivist speculation behind later druid revivals. Digitised from a British Library copy (about 164 downloads).
Downloading this requires a membership tier that includes downloads.