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Letter in French signed 'un gros suisse' about perpetual motion
Letter in French signed 'un gros suisse' about perpetual motion
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 Johann Ludwig in German about his discovery of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from Dr J C Lettsom about perpetual motion
Letter from Dr J C Lettsom about perpetual motion
Letter from J N Morgan about perpetual motion machine
Letter from J N Morgan about 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 Nicholas Bellew about perpetual motion
Letter from Nicholas Bellew 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 Pietro Sladwick about his perpetual motion machine
Letter from Pietro Sladwick about his perpetual motion machine
Letter from Samuel Peel about perpetual motion
Letter from Samuel Peel about perpetual motion
Letter from CSE Richter in French, signed 'JNCJGAG' or 'JNCH Ingenieur-Geographe, Architecte et Graveur' about perpetual motion
Letter from CSE Richter in French, signed 'JNCJGAG' or 'JNCH Ingenieur-Geographe, Architecte et Graveur' about perpetual motion
Letter in French from Amorvet about perpetual motion
Letter in French from Amorvet about perpetual motion
Letter from Private James Anderson about perpetual motion
Letter from Private James Anderson about perpetual motion
Letter from an engineer about perpetual motion machine
Letter from an engineer about perpetual motion machine
Letter from James McCan about a plan for a perpetual motion
Letter from James McCan about a plan for a perpetual motion
Letter from Frederick Matthews about perpetual motion machine
Letter from Frederick Matthews about 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 Francis Dubourdier about his method of obtaining perpetual motion
Letter from Francis Dubourdier about his method of obtaining perpetual motion
Letter from J W Barnard about perpetual motion
Letter from J W Barnard about perpetual motion