I know for sure that there is one in a book. Can't remember which one though, sorry.
Depends how big you need them. There are some on SHOWstudio and other websites if you look around, however they are only 72dpi web published images.

http://www.showstudio.com/projects/sittings/history/img/016.jpg
http://www.vam.ac.uk/vastatic/microsites/photography/images/photograph/large/im00333.jpg