Paul Malon on Flickr has an incredible collection of vintage advertisements from the 20's through what looks like the 60's in the united states. Check out more here: Paul Malon: Adverts 2
A few detail shots of various chalk lettering for the Local Butcher Shop in Berkeley California. Lettering by Kel Troughton with chalkpaint pens. See the full signs here: Expresh Hand Lettering