For more information I highly recommend you contact/join the Offical Bill Miller Fan Club, The Different Drum. They are great people who are in close contact with Bill on a regular basis. Bill writes in almost every issue of the newsletter and they are the best source for his early albums as well as t-shirts and videos.
The Different Drum
P.O. Box 120186
Nashville, TN 37212-0186
They also have a website, the address is http://www.billmiller.net.