Question: What was  Achsa W. Sprague best known for?

full_context: Document 1: The Spirit of the Age: The Spirit of the Age (full title "The Spirit of the Age: Or, Contemporary Portraits") is a collection of character sketches by the early 19th century English essayist, literary critic, and social commentator William Hazlitt, portraying 25 men, mostly British, whom he believed to represent significant trends in the thought, literature, and politics of his time. The subjects include thinkers, social reformers, politicians, poets, essayists, and novelists, many of whom Hazlitt was personally acquainted with or had encountered. Originally appearing in English periodicals, mostly "The New Monthly Magazine" in 1824, the essays were collected with several others written for the purpose and published in book form in 1825.
Document 2: Supernatural beings in Slavic religion: Other than the many gods and goddesses of the Slavs, the ancient Slavs and the Rodnover descendants of today believed in and revered many supernatural beings that existed in nature. These supernatural beings in Slavic religion come in various forms, and the same name of any single being can be spelled or transliterated differently according to language and transliteration system.
Document 3: Isaac Sprague: Isaac Sprague (September 5, 1811 – 1895) was a self-taught landscape, botanical, and ornithological painter. He was America's best known botanical illustrator of his day.
Document 4: Spirit children: A spirit child in Ghana is a disabled child who are believed to possess magical powers to cause misfortune. Disability in Ghana is greatly stigmatised and the only way considered acceptable to deal with the problem is to kill them via advice by a witchdoctor.
Document 5: Ascended Master Teachings: Students of Ascended Master Teachings organizations (also known as Ascended Master Activities) believe that their doctrine has been given to humanity by the Ascended Masters, individuals believed to have lived in physical bodies, acquired the wisdom and mastery needed to become immortal and free of the cycles of "re-embodiment" and karma, and have attained their "ascension", a state of "one-ness" with God. This knowledge is believed to have previously been taught for millions of years only within "Ascended master retreats" and "Mystery schools".
Document 6: Spiritualism: Spiritualism is the belief that the spirits of the dead have both the ability and the inclination to communicate with the living. The afterlife, or the "spirit world", is seen by spiritualists, not as a static place, but as one in which spirits continue to evolve. These two beliefs: that contact with spirits is possible, and that spirits are more advanced than humans, lead spiritualists to a third belief, that spirits are capable of providing useful knowledge about moral and ethical issues, as well as about the nature of God. Some spiritualists will speak of a concept which they refer to as "spirit guides"—specific spirits, often contacted, who are relied upon for spiritual guidance. Spiritism, a branch of spiritualism developed by Allan Kardec and today practiced mostly in Continental Europe and Latin America, especially in Brazil, emphasizes reincarnation.
Document 7: Edgar Cayce: Edgar Cayce ( ; March 18, 1877 – January 3, 1945) was an American Christian mystic who answered questions on subjects as varied as healing, reincarnation, wars, Atlantis, and future events while claiming to be in a trance. A biographer gave him the nickname, "The Sleeping Prophet". A nonprofit organization, the Association for Research and Enlightenment,<ref name='ARE About/Mission'> </ref> was founded to facilitate the study of Cayce's work.
Document 8: Achsa W. Sprague: Achsa W. Sprague (November 17, 1827 – July 6, 1862) was one of the best-known Spiritualists during the 1850s in the United States. Primarily a medium and trance lecturer, she also wrote articles and poetry for Spiritualist publications such as the "Banner of Light", the "Green Mountain Sibyl", and the "People's World".
Document 9: Great White Brotherhood: The Great White Brotherhood, in belief systems akin to Theosophical and New Age, are said to be supernatural beings of great power who spread spiritual teachings through selected humans. The members of the Brotherhood may be known as the Masters of the Ancient Wisdom or the Ascended Masters. The first person to talk about them was Helena Petrovna Blavatsky (Theosophy), and after she and other people claimed to have received messages from them. These included Aleister Crowley, Alice A. Bailey, Guy Ballard, Geraldine Innocente (The Bridge to Freedom), Elizabeth Clare Prophet and Benjamin Creme. Machaelle Small Wright has written extensively about the "White Brotherhood" and her communication and work with them.
Document 10: Spirit possession: Spirit possession is a term for the belief that animas, demons, extraterrestrials, gods, or spirits can take control of a human body. The concept of spirit possession exists in many religions, including Christianity, Buddhism, Haitian Vodou, Wicca, Hinduism, Islam and Southeast Asian and African traditions. In a 1969 study funded by the National Institute of Mental Health, spirit possession beliefs were found to exist in 74% of a sample of 488 societies in all parts of the world. Depending on the cultural context in which it is found, possession may be considered voluntary or involuntary and may be considered to have beneficial or detrimental effects on the host. Within possession cults, the belief that one is possessed by spirits is more common among women than men.
Document 11: Christian Science practitioner: A Christian Science practitioner is an individual who prays for others according to the teachings of Christian Science. Treatment is non-medical, rather it is based on the Bible and the Christian Science textbook, "Science and Health with Key to the Scriptures" (1875) by Mary Baker Eddy (1821–1910), who "discovered" Christian Science in 1866 and founded the Christian Science church in 1879. According to the church, Christian Science practitioners address physical conditions, as well as relationship or financial difficulties and any other problem or crisis. Practitioners are either "listed" or "unlisted," a designation that refers to a form of international accreditation maintained by The Mother Church, in Boston, Massachusetts.
Document 12: Djwal Khul: Djwal Khul (variously spelled 'Djwhal Khul', 'Djwal Kul', the 'Master D.K.', 'D.K.', or simply 'DK'), is believed by some Theosophists and others to be a Tibetan disciple in the tradition of ancient esoteric spirituality known as The Ageless Wisdom tradition. The texts describe him as a member of the 'Spiritual Hierarchy', or 'Brotherhood', of Mahatmas, one of the Masters of the Ancient Wisdom, defined as the spiritual guides of mankind and teachers ancient cosmological, metaphysical, and esoteric principles that form the origin of all the world's great philosophies, mythologies and spiritual traditions. According to Theosophical writings, Djwal Khul is said to work on furthering the spiritual evolution of our planet through the teachings offered in the 24 books by Alice Bailey of Esoteric Teachings published by The Lucis Trust; he is said to have telepathically transmitted the teachings to Bailey and is thus regarded by her followers as the communications director of the Masters of the Ancient Wisdom.
Document 13: The Collected Essays and Occasional Writings of Katherine Anne Porter: The Collected Essays and Occasional Writings of Katherine Anne Porter
Document 14: Metro Spirit: The Metro Spirit is a free alternative news weekly in Augusta, Georgia (USA). The paper is widely available at news stands across the Augusta area. On March 2, 2011, publishing was suspended by then-current managing company Portico Publishing, citing lack of financial performance. "The Spirit" resumed publishing April 14, under new owner Joe White.
Document 15: Reincarnation: Reincarnation is the philosophical or religious concept that an aspect of a living being starts a new life in a different physical body or form after each biological death. It is also called rebirth or transmigration, and is a part of the Saṃsāra doctrine of cyclic existence. It is a central tenet of all major Indian religions, namely Buddhism, Hinduism, Jainism, and Sikhism. The idea of reincarnation is found in many ancient cultures, and a belief in rebirth/metempsychosis was held by Greek historic figures, such as Pythagoras, Socrates, and Plato. It is also a common belief of various ancient and modern religions such as Spiritism, Theosophy, and Eckankar and is found as well in many tribal societies around the world, in places such as Australia, East Asia, Siberia, and South America.
ground_truth: Spiritualism