Netherlands, Leiden, Noothoven van Goor, Dirk, Natural history, Print magazine for children, Water mammals, verso - stamped, Sheet with 6 representations of marine mammals, such as a seal, a walrus and a manatee. Above each representation a title and below each representation a four-line verse. Numbered top right: No. 95., print, prent, volksprent, volksprenten, prints, prenten, height 423 mm, width 309 mm, Publication (Event), Publicatie, publisher, uitgever, 1850 - 1881, paper, papier, houtgravure, letterpress printing, boekdruk, print maker, prentmaker