How annoying. I answered this last week but the response evidently didn't get posted. :-(
Bob Epperson was working on an update a couple of years ago and I sent him corrections for my line. However, the email address he had then is no longer active and I haven't heard from him. He was planning to produce a cd-rom version of the update.
I'd love to know if that is still happening if anyone is in contact with him!