1To Thomas Jefferson from Richard Harlan, 7 April 1826 (Jefferson Papers)
Some months Since, I had the honour to present to you, a Copy of my work, the Fauna...
2From Thomas Jefferson to Richard Harlan, 23 June 1825 (Jefferson Papers)
I thank you, dear Sir, for the copy of your Fauna Americana which you have been so kind as to...
3To Thomas Jefferson from Richard Harlan, 10 June 1825 (Jefferson Papers)
Ambitious to have my name associated, in some respects, with one who has so long and so justly...