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Letter from N Beardmore about railway points
Letter from N Beardmore about railway points
Letter from Thomas Hunt about his rowing barges
Letter from Thomas Hunt about his rowing barges
Letter from Thomas Hunt, draft of prospectus for subscriptions towards the development of his rowing barges
Letter from Thomas Hunt, draft of prospectus for subscriptions towards the development of his rowing barges
Letter from William Walton claiming premium for stopping breaches in banks
Letter from William Walton claiming premium for stopping breaches in banks
Letter from Samuel Steernson, estimate for building a house for experiment with a fire extinguisher
Letter from Samuel Steernson, estimate for building a house for experiment with a fire extinguisher
Letter from Henry Badger agreeing to build a house for experiment with fire extinguisher
Letter from Henry Badger agreeing to build a house for experiment with fire extinguisher
Letter from James Simpson about Mr Marshall's 'intenaco'
Letter from James Simpson about Mr Marshall's 'intenaco'
Letter from J E McDonall about his machine
Letter from J E McDonall about his machine
Letter from G Thurnell about a water meter
Letter from G Thurnell about a water meter
Letter from James Mather about ventilation
Letter from James Mather about ventilation
Letter from James Mather about ventilation
Letter from James Mather about ventilation
Letter from James Mather about ventilation
Letter from James Mather about ventilation
Letter from Benjamin Rotch about Mr Fillary's plummer block
Letter from Benjamin Rotch about Mr Fillary's plummer block
Letter from Robert Hughes about his bridge tree for mills, with a note of the Society's decision
Letter from Robert Hughes about his bridge tree for mills, with a note of the Society's decision
Letter from Matthew Groves, clock maker about his new watch escapement, with a note of the Society's decision
Letter from Matthew Groves, clock maker about his new watch escapement, with a note of the Society's decision
Letter from Henry Thompson about his burglar and fire alarm
Letter from Henry Thompson about his burglar and fire alarm
Letter from Dixon Vallance about his self moving machine with diagram
Letter from Dixon Vallance about his self moving machine with diagram
Drawing from A J Green of his system of ventilation, with envelope
Drawing from A J Green of his system of ventilation, with envelope
Letter from A J Green about his system of ventilation
Letter from A J Green about his system of ventilation
Letter from A J Green about attending to explain his system of ventilation
Letter from A J Green about attending to explain his system of ventilation