I really don't think it's fair to include any live albums in a list of Masterpieces. Though I do enjoy all of the Bootleg series of live shows plus Buddakan and Hard Rain etc, they do not have the mindset or the thought process that goes into a new studio album. That's not to say a live album can not qualify as a Masterpiece, Live at the Fillmore, Allman Bros and Live at Leeds, the Who come to mind. But we are discussing Dylan here and each new studio album gives us a wealth of unexplored landscape to survey. I think Another Side of Bob Dylan, Blonde on Blonde, John Wesley Harding, New Morning, Blood on the Tracks qualify.