Back in the early days of my return to library school, I had the exciting project of researching for my learning group about communication and its relevance for libraries. I created (what I now know was) a terrible blog, but have never stopped being passionate about communication of all types in libraries. So, I was excited to find this blog entry in American Libraries magazine about library signage and thought I’d pass along. See also, as the article suggests, the results of “library signage” search in flikr.
You might also find a constructive and humorous lessons in what not to do for signage in general at passiveagressivenotes.com