QUESTION:
Has Mars been fully mapped both topographically and geologically? Where are
maps of Mars available?

ANSWER from John Moreau on April 30, 1997:
For a topographic map of Mars at 1:25 Million scale, contact the United
States Geological Survey (USGS) office in Denver:

USGS Information
BOX 25286
Denver, CO  80225

or call: 1-800-HELP-MAP
or check out their webpage at http://mapping.usgs.gov/esic/to_order.html

ANSWER from Jim Murphy on July 15, 1997:
Yes, mars is mapped both topographically and geologically, from information
gained with the Mariner 9 orbiter and the Viking orbiters.

The scale of the topographic mapping is on the order of a kilometer or two,
I believe.  As for the geologic mapping, I'm not sure.  The topography data
set can, I think, be obtained from NASA's Planetary data System (PDS), which
can be accessed via the web.  Additionally, the US Geological Survey office
in Flagstaff can be contacted.

As for the geologic map, that might be available on the PDS as well.  USGS
in Flagstaff would probably know where to obtain it.