In reply to JdotP:
I use to be in contact with David back in the late 90s, but no longer have his email. He moved out of climbing and more into photography, I think, after a Greenland expedition. If you search his name with 'photography' you should find some more recent pages and maybe some contact details. He used to live in northern California, but may well have moved.
If you are looking for information on the Second Seven Summits then there is a lot more changed and updated information now to some of the stuff that David wrote about.