Institut für Graffitiforschung - Institute for Graffiti Research
- Everything you want to know about European graffiti (in German and English).
- http://www.graffitieuropa.org/

Pictures of Walls
- Gallery of pictures of walls with things written on them.
- http://www.picturesofwalls.com/

Stranger Than Fiction: I Am Omnicide: Shadows on a Bathroom Wall
- Stefene Russell's essay on bathroom graffiti.
- http://www.pifmagazine.com/vol23/strange.shtml

Graffiti - A Hidden Expression of Culture
- Brief discussion of public graffiti and latrinalia.
- http://sites.unc.edu/daniel/11fall97/finals11/julie/Graffiti.htm

Kilroy Was Here
- On the origin of the phrase and the accompanying image of Kilroy.
- http://www.bbc.co.uk/dna/h2g2/A508277

Nuggets of Bathroom Wisdom
- The stirring truths of life, as written by drunk, peeing people.
- http://www.singintomymouth.com/bathroom.html

Art Crimes: The Writing on the Wall
- Graffiti art and graffiti style writing from around the world.
- http://sunsite.icm.edu.pl/graffiti/