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Letter from B Merriman about improved windmill
Letter from B Merriman about improved windmill
Letter from Marmaduke Overend about horizontal windmill
Letter from Marmaduke Overend about horizontal windmill
Letter from J.L. about horizontal sails for windmills
Letter from J.L. about horizontal sails for windmills
Letter from Joseph Hall about horizontal windmill to be fixed on a building
Letter from Joseph Hall about horizontal windmill to be fixed on a building