Ensayos fotolitograficos. De186.25 Madrid. M DCCC LXXIII, (124) ff. Sq. 16°, A collection of reduced facesimiles of title- pages, colophons, specimen pages, printers! devices, portraits, etc., taken from the early printed books of Spain and Portugal. The dates which are given range from 1519 to 1642, though some, which are without date, are undoubtedly earlier, Edited by Seftor D. Jose Sancho Rayon.