"Building Wireless Community Networks" is by RobFlickenger (of NoCat) and published by O'Reily.  It's a great technical and philosophical introduction to the whys and hows of community wireless networking. -- AdamShand

You can see the table of contents or read a sample chapter:

 * http://www.oreilly.com/catalog/wirelesscommnet/

You can read it online (for a fee) on O'Reily's Safari Online system:

 * http://safari.oreilly.com/main.asp?bookname=wirelesscommnet

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