RC (ViW: TC-JP); dateline adjacent to signature; endorsed by TJ as received 7 Feb. 1822 and so recorded in SJL; with Dft of TJ to Pickering, 13 Feb. 1822, at foot of text. RC (MHi); address cover only; with Dft of TJ to Jerman Baker, 22 June 1824, on verso; addressed: “To Thomas Jefferson Esquire late President of the U. States &c &c &c Monticello Virginia”; franked; postmarked. FC (John Pickering, Salem, Mass., 1951); between dateline and text: “(Copy) To Presidt Jefferson.” Enclosures: (1) Pickering, An Essay on a Uniform Orthography for the Indian Languages of North America, as published in the Memoirs of the American Academy of Arts and Sciences (Cambridge, Mass., 1820). (2) [Pickering], review of Friedrich Adelung’s Uebersicht aller bekannten Sprachen und ihrer Dialekte (Saint Petersburg, Russia, 1820), in North American Review 14 (new ser., 5) (1822): 128–44, which translates the title as “A Survey of all the known Languages and their Dialects”; extols the present age “as the epoch of a new science … the comparative science of languages” (p. 129); explains that Adelung’s German-language publication is “a mere index or prospectus” of a larger intended work (p. 130); and includes a translated abridgment of Adelung’s outline of the world’s languages, organized geographically, with a full version of the sections on North American territories east and west of the Mississippi River.