Answer: A: Digital raster graphics (DRG) and digital orthophoto quadrangles
(DOQ) information can be found on the USGS Web site at:
USGS TerraServer / Digital Backyard
Digital elevation model (DEM) and digital line graphs (DLG) data available
for downloading, from USGS Geographic
Data Download
Other thematic data sites are listed at:
Geospatial Data Clearinghouse (FGDC)
Additional links to information can be found at http://mapping.usgs.gov/
or
By using the Library's Selected Map Web Links page under
Data & Imagery Products
For further information, contact the USGS Earth Science Information Center
(ESIC) in Reston:
U.S. Geological Survey
Earth Science Information Center
507 National Center
Reston, VA 20192
Telephone: 1-888-ASK-USGS (1-888-275-8747) or 703-648-5953
FAX: 703-648-5548
TDD: 703-648-4119
E-mail: ask@usgs.gov
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