Photo(s) by Bart Solenthaler on Flickr.
Contributed by Milan Braun
Contributed by René Villeaux
Contributed by Antoine Pazat
Photo(s) by mikeyashworth on Flickr.
Contributed by Florian Hardwig
Contributed by Claudio Piccinini
Contributed by Pierre Brossard
Photo(s) by altpapiersammler on Flickr.
Contributed by Stephen Coles