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In page Swedenborg 1714 Flying Machine:
"Swedenborg's flying machine was not widely known until his notebook containing the sketch was discovered in 1867-1868 at the Diocesan Library at Linköping, Sweden[1][2] by a visiting researcher from the United States of America. It dates from 1714 and is referred to as "The Manuscript": the published description is referred to as "The Published Account".
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