Analysis of information sources in references of the Wikipedia article "Cavern Mecca" in English language version.
"In December 1981, four months after the MerseyBeatle Extravaganza, BBCTV broadcast a news segment on Cavern Mecca.", "Jim Hughes: My wife Liz and I organized the Beatles conventions in Liverpool from 1981 to 1984. ... We had to give up the centre in December 1984 because my wife became ill and was told she could no longer work. Liz passed away
December 1984 The Cavern Mecca, a Liverpool museum and information center, closes.