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The Henry S. Olcott Memorial Library is a unique library bringing together the religious, philosophical, and spiritual traditions of the East and West, emphasizing the Ancient Wisdom tradition—Theosophy.

Founded in 1926 and named after Colonel Henry Steel Olcott, one of the founders of the Theosophical Society, the library is located at the Society's national center in Wheaton, Illinois.

The library’s collection of about 25,000 titles of books, periodicals, video, and audio recordings is one of the finest in the country. Some of the many subjects included are Theosophy, Eastern philosophy and religions, comparative religion, esoteric Christianity, mysticism, mythology, psychology, parapsychology, meditation, healing, death and dying, astrology, and yoga.

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