I had to go through all sorts of time and aggravation to argue with Garmin and was told that I could not transfer a paid for copy of US Topo maps from an old unit to a new one.
Everyone please send a support payment if you download a map from this site. It's only right to make even a modest payment for what you use so we can keep using these maps and the excellent free advise that comes with them!
Thank you for your support. I'd like to thank all the users that contribute maps.