1From John Jay to James Jay, 4 January 1776 (Jay Papers)
Sir James Jay may have conducted a political correspondence in invisible ink that has not been found, as reported that Sir James may have first sent him some of his invisible ink as early as 1773 or 1774.
2From George Washington to James Jay, 9 April 1780 (Washington Papers)
GW sought a new supply of invisible ink for espionage activities (see
3From George Washington to James Jay, 12 May 1780 (Washington Papers)
GW is referring to invisible ink for espionage activities.
4Thomas Jefferson to James Jay, 7 April 1809 (Jefferson Papers)
During the American Revolution he used an invisible ink of his own invention to pass on intelligence about British activities, but late in the war he undertook a personal peace mission that left his loyalties in dispute. Jay corresponded with TJ about his plans for manufacturing and naval...