Mirror of Wisdom - Teachings on Emptiness — by Tsultim Gyeltsen

Commentaries on the emptiness section of Mind Training Like the Rays of the Sun  and The Heart Sutra.

Stillness, Insight and Emptiness - Buddhist Meditation From the Ground Up — by Lama Dudjom Dorjee

Instructions that will help beginning meditators establish a firm foundation in the practices that lead to direct realization.

Distinguishing the Views and Philosophies - Illuminating Emptiness in a Twentieth-Century Tibetan Buddhist Classic — by Bötrül

An annotated translation of an essential work of twentieth-century Tibetan Buddhist thought, one that explicates teachings on the Middle Way.

The Two Truths Debate - Tsongkhapa and Gorampa on the Middle Way — by Sonam Thakchoe

This work digs into the debate of how the two truths are defined and how they are related by looking at two figures. It shows how their philosophical positions have dramatic implications for how one approaches Buddhist practice and how one understands enlightenment itself.

Freedom From Extremes - Gorampa's Distinguishing the Views  and the Polemics of Emptiness — translated by Lobsang Dargyay & Jose Ignacio Cabezon

Fundamental concept of "emptiness" that avoid the traps of eternalism and nihilism.

The Treatise on the Great Virtue of Wisdom of Nagarjuna - Mahaprajnaparamitasastra  - in five volumes — compiled by Etienne Lamotte

Causality and Emptiness - The Wisdom of Nagarjuna — by Peter Della Santina

Significant works, concerned mostly to the doctrine of interdependent origination.

The Moon of Wisdom - Chapter Six of Chandrakirti's Entering the Middle Way  with commentary from the Eighth Karmapa Mikyo Dorje's Chariot of the Dagpo Kagyu Siddhas.

Jamgon Mipam - His Life and Teachings — by Douglas Duckworth

Biography of one of the most extraordinary figures in the history of Tibet and one of the great luminaries of Tibetan Buddhism in modern times. This book will be of interest, not only to students of Tibetan Buddhism, but to anyone with a sincere interest in discovering the depths of Buddhist insight.

Visionary Journey - The Story of the Wildwood Delights & The Story of the Mount Potala Delights — by Longchenpa, Translated and annotated by Herbert V. Guenther

These are two poems - Longchenpa calls them stories, or narratives - that well illustrate his poetic vision and skill.