This is primarily for those of you using Garmin GPS units and using Garmins
'MapSource' mapping software.  Following a link provided an another list I
found this source of a lot of free topo maps
http://www.gpsfiledepot.com/
I've downloaded several and after running the install they are appearing and
can be selected for viewing in MapSource.  There are some detailed
instructions on the site for installing using a couple of other free
programs but I didn't find the other programs were needed.  I haven't tried
to load them into my Garmin GPS unit yet, I'll post on what I find when I
try that.