Instructions for collecting, rearing, and preserving British & foreign insects : also for collecting and preserving… https://www.rawpixel.com/image/9199153/image-vintage-books-public-domainFree Image from public domain licenseChr.VIII's monogram, three studies of a horse's head, borts or patterns. by Johan Thomas Lundbye https://www.rawpixel.com/image/8924215/image-art-vintage-public-domainFree Image from public domain licenseSchetsblad met groepen schapen (1786 - 1839) by Pieter Gerardus van Os https://www.rawpixel.com/image/13788559/schetsblad-met-groepen-schapen-1786-1839-pieter-gerardus-vanFree Image from public domain licenseMikroskopische Untersuchungen über die Uebereinstimmung in der Struktur und dem Wachsthum der Thiere und Pflanzen / Von Th.… https://www.rawpixel.com/image/13997042/image-paper-cartoon-artFree Image from public domain license