In article .net,
says...
I have started to do a lot more ridge soaring in the last couple years and
most places I go seem to have very nice 3D topo maps somewhere to look at.
All of these maps appear to have been purchased quite a few years ago. I
have done searches on the internet but have not found anything yet.
I would like to find a source to purchase these maps in the USA, anyone with
any leads please post here or email me at the below address, it would be
greatly appreciated.

Hubbard's the company, and here's a place that sells them.

http://www.aworldofmaps.com/rrhome.htm

The USGS raised relief maps are probably the scale you are talking
about.

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Eric Greenwell
Richland, WA (USA)