Thanks for the link. Haven't seen it before.
I often use
Peakbagger to get to a continuous topo map of the U.S. Just search for a name of a nearby peak (top right) or just use their random peak and click on it. When you get to a peak page, go to the lower right where you'll see a "Dynamic Map". Below that map click on the full screen link. You can then move the map to anywhere in the U.S., even places where there aren't any "peaks" and zoom in. Upper right is a drop down menu allowing one to shift between several topo options plus a satellite view. No ability to download the individual topos, but a handy reference.
