Programa de un curso de zoologia
A zoology course programme printed in Guanajuato, Mexico, in 1878 by Alfredo Dugès, likely for students of natural history, and once owned by American naturalist Spencer Baird. The single picture is a fold-out plate of labelled specimen drawings, with letters A and B marking separate fossil or anatomical forms rendered in fine hatched line. A designer might take its cross-hatching and clean labelled diagram layout as a reference for technical illustration.
