Topics:
+ Cassell's natural history
+ Ursus maritimus in zoos
Licensing:
Media information:
Technical Topics:
+ CC-PD-Mark
+ Files from the Biodiversity Heritage Library
+ Files from the Biodiversity Heritage Library (released as Attribution-NonCommercial-ShareAlike)
+ PD-old-70-1923
+ PD-scan (PD-old-70-1923)
+ Photos uploaded from Flickr by Fæ using a script