Fabled Confederate ranger (1833–1916) whose guerrilla band specialized in attacking and disrupting Union supply lines. He earned the nickname “The Gray Ghost” for his clandestine and highly effective attack tactics. TLS signed “Jno. S. Mosby,” one page, 8 x 10, December 23, 1904. Letter addressed to “Mr. President,” apparently to Theodore Roosevelt. In full, “I write a line to thank you for the appointment of J. E. B. Stuart as Marshal for the Eastern District of Virginia. You could not have done a more popular act. Yesterday I wrote him congratulating him on his appointment. Two years ago I wrote you a letter from Colorado recommending Stuart for this position. His father was the best friend I ever had. I would call in person to thank you but I am in deep distress over the death of my daughter.” In fine condition, with staple hole to top left corner and light intersecting mailing folds, one through a single letter of signature. LOA John Reznikoff/PSA/DNA and R&R COA.