Jean-Theodore Descourtilz

Jean-Théodore Descourtilz, a French naturalist and bird illustrator, died Jan. 13, 1855, at the age of about 57. Descourtilz travelled to Brazil in 1826 and began drawing the native birds. By 1834, he had collected enough paintings to publish Oiseaux brillans du...

Georg Wolfgang Knorr

Georg Wolfgang Knorr, a German engraver, was born Dec. 30, 1705. Knorr was introduced to natural history engraving when, while still an apprentice, he worked on the plates for Johann Scheuchzer’s popular Physica sacra (1731-35; we have a copy in the History of...