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 now first collected into one volume.

Licence: Public Domain Mark

Credit: 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 now first collected into one volume. Source: Wellcome Collection.