If you are as interested in commercial signage and type as I am you might find the following site interesting.
This site is based on a walk by Phil Baines for his graphic design students which was then written up for the 1997 ATypI conference. The text has been updated and expanded to include other examples. This walk concentrates on larger examples of public lettering and doesn’t mention incidentals, cocks, manholes, dates on buildings, builders marks, of which there is much en route.
Visit: Public Lettering