Showing 58 results
Archival description
Letter from S.B.E. about perpetual motion
Letter from S.B.E. about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Peel about perpetual motion
Letter from Samuel Peel about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from De Manger in French on perpetual motion
Letter from De Manger in French on perpetual motion
Letter from Pietro Sladwick about his perpetual motion machine
Letter from Pietro Sladwick about his perpetual motion machine
Letter in French from Amorvet about perpetual motion
Letter in French from Amorvet about perpetual motion
Letter from William Eustace about his perpetual motion machine
Letter from William Eustace about his perpetual motion machine
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 William Billingsley about perpetual motion machine
Letter from William Billingsley about perpetual motion machine
Letter from William Billingsley about perpetual motion machine
Letter from William Billingsley about perpetual motion machine
Letter from G H Bates about premium for perpetual motion
Letter from G H Bates about premium for perpetual motion
Letter from Thomas Edwards about perpetual motion
Letter from Thomas Edwards about perpetual motion
Letter from Thomas Edwards about perpetual motion
Letter from Thomas Edwards 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 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 Benjamin Smart about his perpetual motion machine
Letter from Benjamin Smart about his perpetual motion machine