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January 20 GMT

Year	Lecture Title	Book Title	City	Volume
1924	Meditation	Anthroposophy, An Introduction	Dornach	234
1924	A Letter to Members	The Constitution of the General Anthroposophical Society	Dornach	260a
1924	The School of Spiritual Science I	The Constitution of the General Anthroposophical Society		260a
1913	The Relationship Between Spiritual Science and Natural Science and the Riddles of Life	Death and Immortality in the Light of Spiritual Science	Vienna	69d
1907	Esoteric Lesson	Esoteric Lessons 1904–1909	Stuttgart	266I
1922	The Essence of Anthroposophy	The Essence of Anthroposophy	Mannheim	80a
1923	Diphtheria and Influenza — Crossed Eyes	Health and Illness, Volume II	Dornach	348
1914	Second General Assembly of the Anthroposophical Society — Day Three	The History of the Anthroposophical Society 1913–1922	Berlin	251
1914	Lecture I	Human and Cosmic Thought (1961)	Berlin	151
1914	Lecture I	Human and Cosmic Thought (1991)	Berlin	151
1917	Lecture XXI	The Karma of Untruthfulness II	Dornach	173c
1923	Living Knowledge of Nature	Living Knowledge of Nature	Dornach	220
1910	Spiritual Science and Language	Metamorphoses of the Soul II	Berlin	59
1914	Notes on the Development of Eurythmy	The Origin and Development of Eurythmy 1912–1918	Berlin	277a
1924	Eurythmy Performance	The Origin and Development of Eurythmy 1923–1925	Dornach	277d
1905	On the Life of a Spiritual Seeker	Self-Knowledge and God-Knowledge II	Düsseldorf	90b
1910	Spiritual Science and Speech	Spiritual Science and Speech	Berlin	59
1924	The School of Spiritual Science I	Writings on the History of the Anthroposophical Movement and Society 1902–1925		37
1924	The Administration of the Anthroposophical Society II	Writings on the History of the Anthroposophical Movement and Society 1902–1925		37
1923	Second half of a lecture , see GA 220	Not Yet Available	Dornach	259
1924		Not Yet Available		260a