This article is from the Public Radio FAQ, by Rich Kulawiec email@example.com with numerous contributions by others.
Besides the places already mentioned, try KZSU's (Stanford) web site
at http://kzsu.stanford.edu. Also try Chuck Taggart's home page,
which lists non-commercial stations all over the country: it's
found at ftp://ftp.netcom.com/pub/eamon/.