Observations de Mars
1892. Rudaux, Lucien (1874-1947). (1) Observations de Mars. Illustrated autograph document signed, in French. 3-1/2pp. on three sheets. Donville, ca. August 1892. (2) Autograph letter signed, in French, most likely to G. Secretan, manufacturer of scientific instruments; includes sheet with drawings of Mars. 4pp. on 3 sheets. Donville, 9 October..... More