1From Thomas Jefferson to George Rogers Clark, 4 December 1783 (Jefferson Papers)
I received here about a week ago your obliging letter of Oct. 12. 1783. with the shells and seeds for which I return you many thanks. You are also so kind as to keep alive the hope of getting for me as many of the different species of bones, teeth and tusks of the Mammoth as can now be found. This will be most acceptable. Pittsburg and Philadelphia or Winchester will be the surest channel of...