Created by Viktor Almqvist
Contributed by Stephen Coles
Contributed by Miguel Sanz
Contributed by Robin Rendle
Contributed by D. Mx
Contributed by Indra Kupferschmid
Photo(s) by Frank Grießhammer on Flickr.
Contributed by Herb Lubalin Study Center
Contributed by Florian Hardwig
Contributed by Nick Sherman
Photo(s) by Stephen Coles on Flickr.
Photo(s) by dmorris10003 on Flickr.
Contributed by Matthijs Sluiter