QUESTION:
Can I use the pictures fron the Mars Pathfinder web site for publications
and artistic purpurses or modifications? What are the copyright conditions?

ANSWER from Marc Siegel on August 26, 1997:
The following information about  Pathfinder image copyrights is from the JPL
web page http://www.jpl.nasa.gov/pictures/imageuse.html

Unless otherwise noted, JPL images are copyrighted by the California
Institute of Technology.  See http://www.jpl.nasa.gov/pictures/bayhdole.html
for an explanation of why images are copyrighted by Caltech.

The following are guidelines for various types of use:

NEWS MEDIA

News media may use JPL images in news reporting or documentaries on JPL and
NASA projects and programs. The following credit line is requested:
"NASA/JPL/Caltech."

EDUCATION

JPL images may be used in the preparation of course or instructional
materials by teachers or students which are clearly not for profit. Express
permission for such use is not required.  The following credit line is
required: "Courtesy Jet Propulsion Laboratory.  Copyright (c) California
Institute of Technology, Pasadena, CA.  All rights reserved.  Based on
government-sponsored research under contract NAS7-1260."

For images of the  Mars Pathfinder's  Sojourner rover,  the following
attribution is required: "Sojourner (tm), Mars Rover (tm) and spacecraft
design and images copyright (c) 1996-97, California Institute of Technology. 
All rights reserved.  Further reproduction prohibited."

PERSONAL

Individuals may use JPL images on the web for personal,  noncommercial
purposes.  Express permission for such use is not required.  The following
credit line is required: "Courtesy Jet Propulsion Laboratory.  Copyright (c)
California Institute of Technology, Pasadena, CA.  All rights reserved."

For images of the Mars Pathfinder's Sojourner rover, the following
attribution is required: "Sojourner (tm), Mars Rover (tm) and spacecraft
design and images copyright (c) 1996-97, California Institute of Technology. 
All rights reserved.  Further reproduction prohibited."

COMMERCIAL

Permission to reproduce JPL materials for commercial purposes other than
news reporting as described above must be requested in writing. In some
cases a royalty to Caltech will apply.  When submitting requests, please
include the photo number and describe the proposed use in detail.

Requests to use JPL images in advertising or public relations materials
should be directed to: Manager, Public Information Office, Mail Stop
186-123, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena CA 91109. 
Requests may be faxed to (818) 354-4537.

Requests for all other commercial uses of JPL images should be directed to:
Commercial Programs Office, Mail Stop 180-400, Jet Propulsion Laboratory,
4800 Oak Grove Drive, Pasadena CA 91109. Requests may be faxed to (818)
393-1366.