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 collected into one volume, and illustrated with copper plates. The fifth edition. London : Printed for F. Newberry, at the corner of St. Paul's Church-Yard, MDCCLXXIV [1774].
With a half-title.
Vertical chain lines.
Page 176 wrongly numbered 179, and page 207 wrongly numbered 720.
Rockefeller Library copy from the library of the Society of the Sacred Mission, Kelham with its bookplate; numbered "537."
Rockefeller Library copy bound in full calf; rebacked; spine title in gilt on red label.