Here's A bunch of Flickr Photo Pools that limn the depths or plumb the heights or whatever, of spelling and grammatical mistakes on public signage as made by honest, goodfearing , working class people as portrayed by rich Hollywood stars!
Superfluous. Full. Stops. Mostly. From. Dededication. Plaques. from The. 1900s
"Quotation Mark" Abuse
Grocer's Apostrophe The perfect name for this classic mistake -as it commonly appears on hand lettered greengrocer signs.