The above list of Levine's '60s films made me curious so I was somewhat gobsmacked to find he was also a producer in some capacity even if at times uncredited of The Producers, Contempt, Zulu, Caper of the Golden Bulls, Long Days Journey into Night and Santa Claus Conquers the Martians...
Interesting considering Merle Oberon's account of how protective Frances was of her husband's personal prints. Terrible how incompetant people get a hold of such valuable legacies and toss them out.