1To Benjamin Franklin from William Henly, [April? 1772] (Franklin Papers)
ALS : American Philosophical Society I have this day repeated in the most accurate manner I was...
2To Benjamin Franklin from William Henly, [after 4 May 1772] (Franklin Papers)
ALS : American Philosophical Society This letter poses a problem of dating that we are unable to...
3To Benjamin Franklin from William Henly, [June?] 17, [1772?] (Franklin Papers)
ALS : American Philosophical Society Having Received an Account from Dr. Priestley that he could...
4William Henly: Note on the Electrical Phenomena of a Thunderstorm, 30 September 1772 (Franklin Papers)
AD : American Philosophical Society At 10 Minutes past 2: p.m. I heard what I thought (but was...
5To Benjamin Franklin from William Henly, [28 October? 1772] (Franklin Papers)
ALS : American Philosophical Society I have this morning received the [enclosed] Letter from a...
6To Benjamin Franklin from William Henly, [26 November? 1772] (Franklin Papers)
ALS : American Philosophical Society I have Received your very obliging favour, and take the...
7To Benjamin Franklin from William Henly, 28 November 1772 (Franklin Papers)
AD and draft: American Philosophical Society; printed in the Royal Society, Philosophical...
8To Benjamin Franklin from William Henly, [30 December 1772] (Franklin Papers)
ALS : American Philosophical Society I send you herewith the paper of your experiments, and shall...
9To Benjamin Franklin from William Henly, [1772?] (Franklin Papers)
ALS : Historical Society of Pennsylvania I think myself exceedingly obliged to you for your...