Drawing of Arkwright's spinning machine reproduced from Richard L. Hills, "Sir Richard Arkwright and His Patent Granted in 1769," Notes and Records of the Royal Society of London, 24 (1970) 2
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Drawing of Arkwright's spinning machine reproduced from Richard L. Hills, "Sir Richard Arkwright and His Patent Granted in 1769," Notes and Records of the Royal Society of London, 24 (1970) 258..
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