----------------------------Original message----------------------------
Depends on the location and age - the older the better.  The folio for
Yellowstone National Park sells for more than $100 if in good condition;
folios of the mining regions also are worth a fair amount.  Folios of some
featureless plain sell for $10 or so.
 
At 03:23 PM 9/10/97 EDT, you wrote:
>----------------------------Original message----------------------------
>I have been told that the old USGS Geologic Atlases/folios are valuable?
>These are the large 22" X 18" softbound quadrangle maps with text. Does
>anyone know if that is true? KS
>
>Kathy Spencer                           [log in to unmask]
>Geology Library                         Office: 701/777/2408
>University of North Dakota              Fax: 701/777/4449
>P.O. Box 8358
>Grand Forks, ND 58202-8358
>
 
OMNI Resources
International Map Specialists
[log in to unmask]
http://www.omnimap.com/catalog