I bought some states I didn't have. These are good to get an idea of the public land in a particular area, they are half off right now, enter priority code 9978 to get the discount.
http://shop.delorme.com/OA_HTML/DELibeCCtpSctDspRte.jsp?section=10096
http://shop.delorme.com/OA_HTML/DELibeCCtpSctDspRte.jsp?section=10096