Double H
Hamburg graffiti history. Graffiti on trains, walls and canvases. Select text in English or German
http://www.double-h.org/ Report Broken Link
Graffiti Archaeology
Graffiti Archaeology is a project devoted to the study of graffiti-covered walls as they change over time. The core of the project is a timelapse collage, made of photos of graffiti.
http://www.otherthings.com/grafarc/ Report Broken Link
Speerstra
Information covering the early graffiti artists, terms, and culture related to graffiti art phenomenon created in the '60s and '70s.
http://www.speerstra.net/ Report Broken Link
Wikipedia - Graffiti
This web site examines historical graffiti forms, legal issues, graffitti artists and informative literature about graffiti.
http://en.wikipedia.org/wiki/Graffiti Report Broken Link