References for print 1

Here are some great artists and references to get the project started:
Richard Long, Making River Avon Mud Circle, M-Shed, Bristol April 2011.
Watch the documentation of the process here:
http://www.youtube.com/watch?v=JD2Ai_BECbg

Jesse Graves, a street artist/activist who uses mud as a tool as a form of sustainable printing.

http://mudstencils.com/

Andy Goldsworthy, environmental artist
http://www.youtube.com/watch?v=AT3lveJmjY8 (complete River DVD is availaible)
http://www.ucblueash.edu/artcomm/web/w2005_2006/maria_Goldsworthy/TEST/index.html