The Museum of Municipal Signage

Reminiscing about the curious signs that were displayed at public swimming baths when I were a lad in the UK (rules such as 'no ducking, no bombing, no heavy petting' illustrated with quaint black and white drawings), I naturally assumed that it would be easy enough to track down a picture of one of these signs on the web. I was wrong. Surely there are some renegades from Wikipedia willing to devote their time to developing an online museum of municipal signage, a space dedicated to cataloguing street signs and publicly-displayed notices, railway station tannoy announcements and other paraphernalia of everyday life from around the world? I'm sure there are plenty of film-makers, historians, local authorities, and idly curious folk who would find such a resource to be a gift that keeps on giving.
By the by, for an entertaining discussion of the concept of 'petting' (an old-fashioned term even in the 1970s), take a look at The Sneeze.