These source materials are thought to have appeared between 1400 and 1800 CE.
Clues about a heretical sexual practice from the Middle Ages.
Tibetan classic written by a teacher of the Second Dalai Lama.
The Rosary of the Philosophers (Rosarium philosophorum sive pretiosissimum donum Dei) (16th Century)
Image series from an alchemical treatise.
Tibetan legend that instructs the visionary along the spiritual path.