Asaph Hall 1829-1907 American astronomer, discoverer of the Martian moons Deimos and Phobos. Partial A.L.S. with good content, 2pp. 8vo., [n.p., n.d.]. In part: "....The 30 inch glass is not yet at work The Dome is not yet finished on the inside and the shutters are not mounted... advocated by Adams, and Newcomb consented... I could use two dates as the Russians do . "