11To Thomas Jefferson from Gideon Fitz, 24 February 1807 (Jefferson Papers)
On the 10 instant in a letter to you I enclosed one to Isaac Briggs Esqr;—I am fearful it may be...
12To Thomas Jefferson from Gideon Fitz, 16 March 1807 (Jefferson Papers)
P.S. The irregularity and apparent uncertainty in the mails urges me to send this as a duplicate...
13To Thomas Jefferson from Gideon Fitz, 24 March 1807 (Jefferson Papers)
Not knowing where to direct to Mr. Briggs, I take the liberty of transmitting the enclosed letter...