What were Critical Mass without artwork?
Some free images (free not as free beer but Public Domain, Creative Commons by-(sa), GFDL, ...).
- Various graphics
- Moz.net.nz artwork (public domain)
- Tons of images on the Critical Mass Italy site
- Category:Critical Mass on commons.wikipedia.org
- Critical Mass Cartoon
- Awesome Critical Mass graphics by flickr-user hughillustration (available under the license Creative Commons Attribution-Noncommercial-Share Alike 2.0 Generic)
- Graphics by Mona Caron
- Her website
- Book cover of Critical Mass: Bicycling's Defiant Celebration by Mona Caron
- Amazing CM poster by Mona Caron (CC-by-nc-sa)
- Graphics by Ben Towle
- Critical Mass Cartoon - Chicken on bikes