Theosophical Classics & Basics

Key to Theosophy, by H.P. Blavatsky: An introductory book, explaining theosophical basics and the objects of the Theosophical Society.
The Voice of the Silence, by H.P. Blavatsky: Devotional classic meant for disciples who want to practice the path.
The Secret Doctrine: Volumes one and two. Blavatsky's Magnus Opus. A book usually thought to be very difficult, yet full of insights for the persevering student.
The Secret Doctrine: Volume 3. Published after Blavatsky's death by Annie Besant from the papers found in Blavatsky's desk. More easily read than volume 1 and 2.
Isis Unveiled: Blavatsky's first book. Many intruiging ideas and strange "facts" (or fictions?) in a chaotic lack of organisation.
Foundations of Esoteric Philosophy from the Writings of H.P. Blavatsky: Arranged with a Foreword and Notes by Ianthe H. Hoskins

The Mahatma Letters to A.P. Sinnett: A book composed of the letters the two Mahatmas Koot Hoomi Lal Singh and Morya wrote to A.P. Sinnett, an early member of the Theosophical Society.
Light on the Path, Mable Collins.: A devotional classic, supposedly dictated to Mabel Collins by an adept.
At the Feet of the Master, Alcyone.: A devotional classic.
Human Regeneration, N. Sri Ram.: This booklet, or artical is a classic on the subject of inner transformation.
Transactions of the Blavatsky Lodge, april 25th (PDF opens in new window),: Unique online document that has not yet been published in bookform. Material for students who are familiar with the basic theosophical literature. A followup to the more generally known and studied explanations on the Secret Doctrine:
Secret Doctrine Commentary:: Transactions of the Blavatsky Lodge of the Theosophical Society, By H. P. Blavatsky; Discussions on the Stanzas of the First Volume of The Secret Doctrine
Theosophy Versus Neo-Theosophy: compiled by Margaret Thomas

This is only a selection. More can be found at: