Émile Deyrolle was a French naturalist and natural history dealer but is also known for his French teaching charts published by Les Editions Deyrolle and printed by E Kapp.
Featured image: Émile Deyrolle - Le Lait, (detail). Date unknown. Stone Lithograph. 33 1/4 × 25 3/4 in. 84.5 × 65.4 cm. This is a non-editioned multiple. Photo courtesy ArtWise