1Silas Deane to Robert Morris and the Committee of Secret Correspondence, 23 June 1776 (Franklin Papers)
...point was apparently a communication in invisible ink, which is no longer decipherable; see...
2The American Commissioners to John Jay, 2 June 1777 (Franklin Papers)
...that another and closely similar communication in invisible ink, now lost, followed six...
3To John Jay from Silas Deane, 2 December 1776 (Jay Papers)
written in invisible ink and rendered visible by Bendikson through the use of ultraviolet...
4To John Jay from the American Commissioners (Benjamin Franklin and Silas Deane), 2 June 1777 (Jay Papers)
...forward correspondence, much of it originally in invisible ink, from Deane and Franklin to the...