Image from page 138 of "Elements of zoölogy : a textbook" (c1875)

<n>Bat Morphology Sketch Pad</n>, a lithograph published in 1882.

Line art used as album art for <n>Kunteynir</n>'s song "<n>Рита \ Подать Надежды (Rita \ Promising )</n>".

A pencil sketch titled <n>Visual Elements and Layout study</n> by the artist Lenghelo_ro_lu.

Monochrome black vintage engraving drawing a pair of wing isolated on...

Skeleton of a <n>Brown long-eared bat</n>. Photo by <n>Natural History Museum, London</n>/<n>Science Photo Library</n>.