1To George Washington from Jacob Isaacks, 17 August 1790 (Washington Papers)
The inclosed copies of certificates Signed By Several Gentlemen of this Town Will Inform You...
2X. Jacob Isaacks to the Secretary of State, 1 November 1791 (Jefferson Papers)
I take the liberty to address You on the subject of taking the fresh water from the Sea Water,...
3XII. Jacob Isaacks to the Secretary of State, 19 March 1792 (Jefferson Papers)
I recieved Yours with the Report, and was sorry to find You was so Hastity in Making the same so...