The montage at the top of this page incorporates images believed to be in the public domain, including, but not limited to, Marianne North's "The Road up to Naim Tal" (1877), at the Kew Royal Botanical Gardens, and those available at the following URLs:
- http://en.wikipedia.org/wiki/Image:Robot_asimo_cropped.jpg
- http://nssdc.gsfc.nasa.gov/imgcat/html/object_page/a11_h_44_6667.html
- http://en.wikipedia.org/wiki/Image:Concorde_on_Bristol.jpg
- http://cgfa.sunsite.dk/o/p-osbert1.htm
