Black American Wolf (Canis lupus) from the viviparous quadrupeds of North America (1845) illustrated by John Woodhouse… https://www.rawpixel.com/image/321825/free-illustration-image-wolf-wild-vintageFree Image from public domain licenseRed Texan Wolf (Canis lupus) from the viviparous quadrupeds of North America (1845) illustrated by John Woodhouse Audubon… https://www.rawpixel.com/image/321865/free-illustration-image-wolf-texas-audubonFree Image from public domain licenseSeven different specimen of the families of wolves and foxes (canis lupus and vulpes). Coloured etching by J. Miller. https://www.rawpixel.com/image/13962540/image-dog-cat-cartoonFree Image from public domain licenseWhite American Wolf (Canis lupus) from the viviparous quadrupeds of North America (1845) illustrated by John Woodhouse… https://www.rawpixel.com/image/321829/free-illustration-image-wolf-vintage-viviparous-quadrupedsFree Image from public domain license