BEWARE - the Mel Bay book of Fuzzy Mountain String Band tunes contain only 3 finger up-picking tablatures, and not the clawhammer that was used on the CD that comes with it. God knows why Mel Bay did this, but its very frustrating - there's nothing in the book that tells you which style of tab is being used. You only find out after an hour of trying tunes in clawhammer and scratching your head.
The 2 Dwight Diller videos are excellent learning tools, as are Ken Perlman's books, Brad Leftwich's Round Peak Clawhammer, and many others.
Cheers
Ray