KEPPEL, AUGUSTUS ADMIRAL AUTOGRAPH LETTER 1766: Signed letter to John Shane approving a draft and welcoming a visit from his correspondent. Keppel was the Admiral Commodore on the North American Station in 1754. Letter dated 20 Sept. 1766. Framed with clip portrait. Letter measures 12 1/4'' wide X 7 3/4'' high. Frame measures 19 1/4'' X 16 5/8''.