1From 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 send me, with the 2. interesting pamphlets on the Genus Salamandra and Agama. you have rendered a service of essential value to science in bringing to-gether the American subjects of Nat Hist. separately from those of the other quarter’s of the globe and relieving them at length from the Confusion...