Through the generosity of James Stewart and the Rudolf Steiner Archive, the following important lectures appear here:
The Michael Culture of the Future (The Ancient Yoga Culture and the New Yoga Will)
The Elemental World and the Future of Mankind
Links to key books at www.rsarchive.org:
Materialism and the Task of Anthroposophy
Individual Spirit Beings and the Undivided Foundation of the World (especially Part 3) from The Reappearance of Christ in the Etheric
The Challenge of the Times (introduces the concept of Mechanical Occultism in lecture 3)
The Fall of the Spirits of Darkness
Geographic Medicine and the Mysteries of the Double
Three Streams in the Evolution of Mankind
From the Contents of Esoteric Classes
Anthroposophical Leading Thoughts: From Nature to Sub-Nature
Inner Impulses of Evolution, The Mexican Mysteries, The Knights Templar
The Spiritual Beings in the Heavenly Bodies and in the Kingdoms of Nature
The Mystery of the Second Coming of Christ