1From Thomas Jefferson to Francis Hopkinson, 3 January 178[6] (Jefferson Papers)
I wrote you last on the 25th. of Sep. since that I have received yours of Oct. 25. inclosing a duplicate of the last invented tongue for the harpsichord. The letter inclosing another of them and accompanied by newspapers, which you mention in that of Oct. 25. has never come to hand. I will embrace the first opportunity of sending you the crayons. Perhaps they may come with this, which I think...
2From Thomas Jefferson to Francis Hopkinson, 26 January 1786 (Jefferson Papers)
My last to you was of the 3d. inst. and acknoledged the receipt of yours of Oct. 25. covering your new invented harpsichord tongue. The present is to acknolege the receipt of your favor of Sept. 28. with newspapers but in which there was not a model of the tongue as you mentioned. The bearer of this letter is a careful man of Connecticut, who has been hitherto servant to the M. de la fayette....
3From Thomas Jefferson to Francis Hopkinson, 9 May 1786 (Jefferson Papers)
The only letter of yours the receipt whereof I have not yet acknoleged is the 31st. of Dec. Mine are of Sep. 25. Jan. 3. and Jan. 27 [i.e., 26]. With that of Jan. 27. I had sent the crayons &c. formerly desired. With the present I will send 2. doz. camelshair pencils, and a doz. black lead pencils which are desired in yours of Dec. 31. I at the same time sent the 14th. 15th. and 16th....