Actually, I noticed that the topo does have the town name. I just need to look for the little lime diamond, on both BaseCamp and the unit. That's good to know.
I installed the US States and Counties map, but I don't see any difference in BaseCamp. (I haven't installed it on the eTrex 20 yet.) It's not in the map drop-down. But in case, as an overlay, it isn't supposed to be, I panned over to a county boundary, which is in the topo from this site (motopo11), but when I chose the Global Map, the county boundary doesn't show. In other words, it doesn't add anything to Garmin's base map, and it isn't needed for topos from this site, because the boundaries are already there.
On the eTrex 20, if I use Where To? --> Cities, I get a bunch of entries that begin
map created with http:/
and are truncated at that point. If I click into one of them it only gives me a tiny bit more:
map created with http://c
and leaves the arrow pointing at the center of a map section from the downloaded topo. That is "Cities" are actually references to the map sections, not cities.
But that's OK. If I use Where To? --> Geographic Points --> Manmade Places (or All Categories), I do find the nearest towns/cities in that.