Book Reviews

Buy this book before you buy your GPS.  It will teach you what questions to ask and what the answers mean...there's no better way to learn the ins and outs of GPS.
    -- News Tribune, Tacoma, WA

If you travel far from the beaten path, or in regions without obvious points of reference, GPS can be a tremendous source of security.  Letham's book can explain how to make the most of that global navigation system...it's a one -- stop source of information.
    -- Times Leader, Wilkes-Barre, PA