EDISON, THOMAS A. Autograph letter signed ("T A E") to "Darling Billy" [Mina Edison], regarding a trip to the city, and other various matters. Llewellyn Park, n.d. 4 pages, 8vo, written on rectos and versos, on monogrammed stationery. "... Eliot is a very fine man indeed he was once a chemist and published a book called Chemical Solubilities. The only one in the language it is so scarce now that while it originally sold for $3 is worth $30..." With a 2-line postscript at end.