London: Printed and sold by D. Henry and R. Cave, 1754. Full Description: FRANKLIN, Benjamin. New Experiments and Observations Made on Electricity. Made at Philadelphia in America. Communicated in Several Letters to P. Collinson, Esq. of London. F.R.S. London: Printed and sold by D. Henry and R. Cave, 1754. First collected edition and second edition overall. With the first edition of Part III. Three parts in one small quarto volume (9 x 6 7/8 inches; 227 x 174 mm). [2], 109, [6], 112-154 pp. One engraved folding plate in Part I. Engraved head and tail pieces. With separate title-pages for each part, each dated 1754. A few errors in pagination, but collation is correct. Continuous pagination and collation throughout all three parts. We could find no copies of this 1754 first collected edition at auction since 1996. Bound to style in modern full brown morocco. Spine ruled and lettered in gilt. Top edge dyed black, others speckled red. Newer endpapers. Dentelles stamped in blind.…