DS as president, one page, 6.5 x 9, November 17, 1860. President Buchanan orders the Secretary of State to “affix the Seal of the United States to the envelope of a letter addressed to ‘His Excellency the President of the Republic of Mexico’ (accrediting John B. Weller.” Signed at the conclusion in black ink by Buchanan. Matted with a color portrait of Buchanan, to an overall size of 20.5 x 15. In fine condition, with light toning along several horizontal folds and some light wrinkles. LOA John Reznikoff/PSA/DNA and R&R COA.