Absolutely wonderful singer, although definitely not for the faint hearted.

The only solo CD I know of him is An Untamed Sense of Control. Smithsonian Folkways. SFW CD 40144. He also appears on Friends of Old Time Music: The Folk Arrival 1961 - 1965. Smithsonian Folkways SFW40160 2006.

Roscoe made several LPs for Folkways, namely;

The Music of Roscoe Holcomb and Wade Ward FA 2363
Close to Home FA 2374
The High Lonesome Sound FA 2368

The Untamed CD is drawn from these. I've never checked, but it's likely they wouldn't have got all the material from those LPs on. However, any surplus stuff can be downloaded from the Global Smithsonian site (http://www.smithsonianglobalsound.org/) for 99c a track.