ASTRONOMERS: An excellent selection of six A.Ls.S., 8vo, by various eminent Astronomers, containing John Herschel (1792-1871) English Astronomer, Inventor and Chemist. Herschel originated the use of the Julian day system in astronomy. He also made important contributions to the science of photography. Two pages. Stating `..your vegetable monster on which after opening very wide the eyes of astonishment we have all come to the conclusion that it is - what it is - and nothing else!´; Joseph Lalande (1732-1807) French Astronomer, Freemason and Writer. Short message stating `I beg my dear professor and long time friend to come on the 16th to the Institute where I will need him to help my nephew with the justice he needs.´; Urbain Jean Joseph Le Verrier (1811-1877) French Astronomer and Mathematician. Best known for predicting the existence and position of Neptune using only mathematics. His discovery is widely regarded as a validation of celestial mechanics. Le Verrier states `I kindly ask you to allow that the secretary of direction of the observatory, Mr. Levy, can make a research on my behalf with the universal monitor´; Johann-Elert Bode (1747-1826) German Astronomer. Bode determined the orbit of Uranus. In German; Johann Franz Encke (1791-1865) German Astronomer. He worked on comets and asteroids and measured the distance from earth to sun. In German; Camille Flammarion (1842-1925) French Astronomer and Author. Juvisy, 2nd November 1891. Small overall minor age wear. G, 6