Darn, you beat me to it. "Doc and Merle Watson's Guitar Album"
Also - Christopher Parkening's "Tribute to Segovia" - "Liona Boyd Live in Tokyo" - and "Hawaiian Slack Key Guitar Masters," a compilation cd on Dancing Cat Records.
If you can find anything by Merle Travis, after whom Doc named his son, that would be good too for the perfomances but probably not the greatest sonically.
Also - Christopher Parkening's "Tribute to Segovia" - "Liona Boyd Live in Tokyo" - and "Hawaiian Slack Key Guitar Masters," a compilation cd on Dancing Cat Records.
If you can find anything by Merle Travis, after whom Doc named his son, that would be good too for the perfomances but probably not the greatest sonically.