> Would any of you have recommendations as too good materials
> on the internet or in print

Scott,

You could refer to the paper I presented at the CSUN conference
this year.  It discusses the description of art objects, though
the general principles may be applied to your situation.

The paper is called "A Picture is Worth 300 Words," and it is
online at:

  http://www.csun.edu/cod/conf2001/proceedings/0031alonzo.html

Adam Alonzo
Accessible Arts Coordinator
Wright State University


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