Experiments and observations on electricity [microform] : made at Philadelphia in America, by Mr. Benjamin Franklin, and communicated in several letters to Mr. P. Collinson of London, F.R.S.
Franklin, Benjamin,1706-1790.
Collinson, Peter,1694-1768.
London : Printed and sold by E. Cave ...,
1751.
Sabin 25505
Microfiche.
Electricity