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Letter from Major General Anthony Farrington about Robert Perrie's method of reducing the friction in carriage wheels
Letter from Major General Anthony Farrington about Robert Perrie's method of reducing the friction in carriage wheels
Letter from William Dufour about his improved scaffold
Letter from William Dufour about his improved scaffold
Letter from John Ross about his method of preventing the counterfeiting of money and his metal rope, with general observations
Letter from John Ross about his method of preventing the counterfeiting of money and his metal rope, with general observations
Letter from John Newton about winding machine for weavers
Letter from John Newton about winding machine for weavers
Letter from WP about his method of clearing rivers
Letter from WP about his method of clearing rivers
Letter from Richard Grubb about his fire escape
Letter from Richard Grubb about his fire escape
Letter from Samuel Peel about perpetual motion
Letter from Samuel Peel about perpetual motion
Letter from Richard Judson about system of weights and measures
Letter from Richard Judson about system of weights and measures
Letter from Robert McEwen about ships pumps
Letter from Robert McEwen about ships pumps
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