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Letter from Benjamin Franklin, receipt for reward paid to Aaron Miller for his compass
Letter from Benjamin Franklin, receipt for reward paid to Aaron Miller for his compass
Letter from Charles Willson, plasterer, about his improved canon
Letter from Charles Willson, plasterer, about his improved canon
Letter from Charles Willson, plasterer, about his harness for stopping a runaway horse
Letter from Charles Willson, plasterer, about his harness for stopping a runaway horse
Letter from William Walcot Jnr about John Williamson's combination of pulley's
Letter from William Walcot Jnr about John Williamson's combination of pulley's
Letter from Abraham Osorio about Mr Patterson's apparatus for measuring land
Letter from Abraham Osorio about Mr Patterson's apparatus for measuring land
Letter from Mr Hibbard, calculations about canal navigation
Letter from Mr Hibbard, calculations about canal navigation
Letter from J Bryant about preventing accidents in two wheeled carriages
Letter from J Bryant about preventing accidents in two wheeled carriages
Letter from J Bryant about preventing accidents in two wheeled carriages
Letter from J Bryant about preventing accidents in two wheeled carriages
Letter from John Brown about chimney sweeping machine
Letter from John Brown about chimney sweeping machine
Letter from Anthony White about his surgical bed for invalids
Letter from Anthony White about his surgical bed for invalids
Letter from William Benett about chimney sweeping machine
Letter from William Benett about chimney sweeping machine
Letter from Thomas Machell about instrument for amputation of limbs
Letter from Thomas Machell about instrument for amputation of limbs
Letter from WSJ Whitelock about his fire escape, with drawing
Letter from WSJ Whitelock about his fire escape, with drawing
Letter from Rev William Milton about improved carriage, with envelope
Letter from Rev William Milton about improved carriage, with envelope
Letter from J S Thomas on his fire escape
Letter from J S Thomas on his fire escape
Letter from Johnson Jex about method of suspending windmills
Letter from Johnson Jex about method of suspending windmills
Letter from George Smith on his machine to force water with a screw
Letter from George Smith on his machine to force water with a screw
Letter from Mr Field about his furnace
Letter from Mr Field about his furnace
Letter from H Moir about machine for propelling vessels by manual labour
Letter from H Moir about machine for propelling vessels by manual labour
Letter from John Holt, account of his experiments upon vegetation, the effects of lopping away the roots of wheat
Letter from John Holt, account of his experiments upon vegetation, the effects of lopping away the roots of wheat