The Beatles Book had been published each month since August 1963 until this, the 77th and final issue.
Published on 1 December 1969, the last edition included a leader column from editor Sean O'Mahoney, writing as Johnny Dean, in which he criticised The Beatles for encouraging drug experimentation among their fans.
O'Mahoney took the decision to cease publication after it became obvious that The Beatles were unlikely to continue recording. However, it was revived in May 1976 with reissues of the original 77 editions, along with new content. The second run ended with issue 321 in January 2003.
I have most of the reissues that began around 1976 or so.