Rolling Stone review from October 18, 1969, by T.M Christian.
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Due to the first column and paragraph one of column two being blurred, I have transcribed them below:
"They began months ago, the rumours of an event that at first seemed hardly believable but which in the end was accepted as all but inevitable. After all, with 'Garage Jam', Super Sessions', 'The Live Adventures of...', Blind Faith, Joe Cocker's LP, Crosby, Stills, Nash & Young, 'Jammed Together' and 'Fathers & Sons', it had to happen. Set for release later this month, the 'Masked Marauders' two-record set may evoke an agonizing 'tip-of-the-tongue', lobe-of-the-ear recognition in some, or cries of 'No, no! It can't be true!' in others. But Yes, yes it is - a treasured, oft-xeroxed sheet of credits (which, for obvious contractual reasons, will not be reproduced on the album), and the unmistakable vocals make it clear that this is indeed John Lennon, Mick Jagger, Paul McCartney and Bob Dylan, backed by George Harrison and a drummer as yet unnamed - "THE MASKED MARAUDERS".
Produced by Al Kooper, the the album was recorded with the impeccable secrecy in a very small town near the site of the original Hudson Bay Colony in Canada. Cut in late April, only three days were required to complete the sessions, though mixing and editing involved months of serious consultations on both sides of the Atlantic. Word has it that the cover art was intended as a "send-up" of Blind Faith, but none of the principals were willing to comment on the situation."
Available on Deity Records.