
2: The Electric Telegraph – Stephen Jones and Associates,

Experiments and Observations on Electricity, Made at Philadelphia in America, By Benjamin Franklin, L.L.D. and F.R.S. To which are added, Letters and Papers on Philosophical Subjects. The Whole corrected, methodized, improved, and,

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Experiments and Observations on Electricity, Made at Philadelphia in America, By Benjamin Franklin, L.L.D. and F.R.S.