Bradley Fulton/Flickr
velo_city/Flickr 
Bsandtana/Flickr
terratrekking/Flickr
safariman/Flickr 
Margaret Killjoy/Flickr
James Marvin Phelps/Flickr
Adam Baker/Flickr
Jeremy Blakeslee/Urban Archeology/Flickr
Howard Ignatius/Flickr