An annotated translation of five key texts of the Everlasting (Yungdrung) Bön school selected by the late H. H. Menri Trizin Rinpoché that includes scriptural teachings, a root tantra based on revealed teachings of the unconditioned absolute, a canonical commentary on the root tantra, an exposition of the Yungdrung tantric system, and the oral instructions on Bön meditation practices associated with experiencing the nature of the mind, the Great Perfection systems. This authoritative annotated translation of five key texts of Everlasting (Yungdrung) Bön by Marc des Jardins opens up a relatively unknown tradition that, since the arrival of Buddhism in Tibet, has undergone great transformations in its philosophy, doctrinal teachings, and meditative practices. Each text represents an important aspect of the tradition. The first text, by Drogön Azha Lodrö Gyaltsen (1198–1263), presents the grounds and paths of the Greater Vehicle of the Bön tradition and represents the philosophical ideology of its teachings based on the scriptures contained in the Bön canon. The second text is a short root tantra attributed to revealed teachings from Kuntu Zangpo, the personification of the unconditioned absolute. The third text is a commentary on this root tantra attributed to Drenpa Namkha (fl. eighth century), a Bönpo sage contemporary with Padmasambhava. The fourth text, by Nyamé Sherap Gyaltsen (1356–1415), presents a general exposition of the tantric system according to Yungdrung Bön.