After the frustrated publication by means of Berkeley Hills Books, maybe this will the definitive one.
Bouncin' With Bartok: The Incomplete Works of Richard Twardzik
by Jack Chambers
Paperback: 240 pages Publisher: Mercury Press (October, 2008) Language: English ISBN-10: 1551281414 ISBN-13: 978-1551281414
Cheers,
Jordi