A really good photographic resource - you can download a watermarked version (like the one on this post - see details of picture at the end of this post), purchase rights to an image or buy a print. Kat, do have a look at the Late Period cat with kitten!
Erich Lessing Culture and Fine Arts Archive is an extensive image library featuring over 40.000 high resolution images from over 500 museums and many other collections. Founded and mostly photographed by Erich Lessing, the collection covers a wide range of subjects: Fine Arts, Religion, History, Music, Archaeology, Mythology, Architecture, Landscapes, Historical Portraits and Reportage.
Click to see the results from some of my searches:
The photo above is listed as an ivory boar, 4000-3800 BCE Predynastic, Nagada I. Measurements L: 10,5 cm H: 4,5 cm, from a private collection in France. It is almost certainly unprovenanced but it was so endearing that I had to post it!