itunes is going to release The Complete Carnegie Hall Concert from 1962 as a digital only release. Although the contents have not been released officially yet, there is discussion on Liam Clancy's website about that very topic. Point your browser to
http://www.liamclancy.com/cgi-bin/teemz/teemz.cgi?board=_master&action=opentopic&topic=1929&forum=Messageboard