Thanks Lenny. We have been slowly but surely deleting articles.
I was of the opinion - the more the better. This morning I was looking in the log files and saw some page not found errors on pages that we deleted already. Since then I have included the list of our pages with links from the site Ted gave me, all of the Webmaster tools list, all of the pages that have had visitors in since my wife created the list in the first place.
I am sure there are duplicates in the list - for instance, some were on the list I got from Majestic SEO and Webmaster tools etc., but if we are just doing a find command with a ton of data, it doesn't really matter how long the list is.
The site is too valuable to just forget about it or start over, and it still generates some income despite being hit by Panda. Plus, I have been working on it since 2004 while we parked the domains we bought back in the 90s. This is our baby now.
I am going to go with the more conservative approach and delete a little at a time now, and try to be more selective (careful).
Thanks for your comment. At least I am not the only one in this boat.