Due to contract issues, a number of David Grisman's 'out of print' older recordings will never see the light of day.
Acoustic disc has been posting these gems on there website http://www.acousticdisc.com as MP3's one at a time for the last couple weeks.
If you have missed out, you can peak in the backdoor here:
and get caught up. Remember to check back every few days as they will be posting cuts through the new year..
Be kind, grab a few at a time and don't hammer the site. Bandwidth might be at a premium..