This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
public domain drawing reference collage fodder elusive muse sketch Public Domain Book Historiae naturalis de quadrupetibus libri cum aeneis figuris Historiae naturalis de serpentibus libri II Historiae naturalis de insectis libri III Historiae naturalis de exanguibus aquaticis libri IV Historiae naturalis de piscibus et cetis