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Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from John Ashfold about his discovery of perpetual motion
Letter from John Ashfold about his discovery of perpetual motion
Letter from John Justins about perpetual motion
Letter from John Justins about perpetual motion
Letter from John Justins about perpetual motion
Letter from John Justins about perpetual motion
Letter from John Justins about perpetual motion and reclaiming land from the sea
Letter from John Justins about perpetual motion and reclaiming land from the sea
Letter from John Lewis Tesch about his machine of perpetual motion
Letter from John Lewis Tesch about his machine of perpetual motion
Letter from Joseph Driver about perpetual motion,with a note of the Society's decision
Letter from Joseph Driver about perpetual motion,with a note of the Society's decision
Letter from Joseph Smith about his machine of perpetual motion
Letter from Joseph Smith about his machine of perpetual motion
Letter from Lt James Laurie about perpetual motion
Letter from Lt James Laurie about perpetual motion
Letter from M de Cybulski in French on perpetual motion
Letter from M de Cybulski in French on perpetual motion
Letter from M de Cybulski in French on perpetual motion
Letter from M de Cybulski in French on perpetual motion
Letter from N W Kool about perpetual motion machine
Letter from N W Kool about perpetual motion machine
Letter from Nicholas Bellew about perpetual motion
Letter from Nicholas Bellew about perpetual motion
Letter from Pietro Sladwick about his perpetual motion machine
Letter from Pietro Sladwick about his perpetual motion machine
Letter from Private James Anderson about perpetual motion
Letter from Private James Anderson about perpetual motion
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Robert Dawson about his use of perpetual motion
Letter from Robert Dawson about his use of perpetual motion
Letter from Robert Dawson to Sir Joseph Banks about his improved plough and his mastery of perpetual motion
Letter from Robert Dawson to Sir Joseph Banks about his improved plough and his mastery of perpetual motion