The Jewel Ornament of Liberation - The Wish-Fulfilling Gem of the Noble Teachings — by Gampopa

A masterwork of Tibetan Buddhism. This text has provided the backbone of study particularly in the Kagyu tradition – covering the initial entry into the path and continuing through finding a spiritual master, teachings on impermanence, karma, bodhicitta, Buddha nature, six perfections, bodhisattva bhumis, Buddhahood and the activities of Buddha.

Penetrating Wisdom - The Aspiration of Samantabhadra — by Dzogchen Ponlop Rinpoche

This is a book of teachings on the Buddhist paths of Dzogchen and Tantra by an innovative Tibetan master who is both authoritative and modern. Basing himself on The Aspiration of Samantabhadra  - a proclamation in the Buddhist tantras of the Buddha Samantabhadra - Ponlop Rinpoche illuminates the philosophy and meditation practices of Dzogchen.

The Way of the Bodhisattva (Bodhicharyavatara) — by Shantideva

Treasured by Buddhists of all traditions, "The Way of the Bodhisattva" (Bodhicharyavatara) is a guide to cultivating the mind of enlightenment, and to generating the qualities of love, compassion, generosity, and patience.

Alchemy
— lectures by Manly P. Hall

1 - Adepts of the Alchemical Tradition
2 - Hermetic Symbols of the Great Work
3 - Human Regeneration by Alchemy
4 - Alchemical Transmutations Psychologically Interpreted (not included)
5 - Chinese & Tibetan Alchemy