The official site.

JPL's Robotic Vehicles Group

Some papers in PDF format, not looked at all these

http://jpltrs.jpl.nasa.gov/1995/95-0096.pdf

http://jpltrs.jpl.nasa.gov/1995/95-0715.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1111.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1140.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1187.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1194.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1213.pdf

http://jpltrs.jpl.nasa.gov/1995/95-1334.pdf

Papers on fuzzy robots.

Postscript papers on pathfinder

Some info on the compression used by the sojourner

Mars sample return mission

Geoffrey A. Landis's page, Very good, lots of links.

Sojourner suspension in Lego(TM)