1964 — Brian Epstein, A Cellarful of Noise, Pierian Press (1964), page 70:
One problem of relationships remained as a result of Ringo's Beatledom for he had been a valuable member of an excellent group called the Hurricanes, led by Rory Storme, one of the liveliest and most likeable young men on the Scene.
1982 — Philip Norman, The Road Goes on Forever: Portraits from a Journey Through Contemporary Music, Simon and Schuster (1982), →ISBN, page 27:
She had given John his escape route from Beatledom, but in the process, had sacrificed all her own ambitions and identity as an artist.
1985 — Martin A. Lee & Bruce Shlain, Acid Dreams: The CIA, LSD, and the Sixties Rebellion, Grove Press (1985), →ISBN, pages 182-183:
His protracted self-investigation with LSD only exacerbated his personal difficulties, as he wrestled with Beatledom and his mounting differences with Paul over the direction the group should take, […]
2007 — Jonathan Gould, Can't Buy Me Love: The Beatles, Britain, and America, Harmony Books (2007), →ISBN, page 368:
Because he was the Beatle who had always been least tolerant of the trappings of Beatledom, it was no surprise that George Harrison's sabbatical from the group should turn out to be the most personally fulfilling.
Noun: "the sphere, cultural phenomenon, or fandom of The Beatles"
1971 — Karl Dallas, Singers of an Empty Day: Last Sacraments for the Superstars, Kahn & Averill (1971), page 106:
It would be interesting to see the uncensored version, not only for the full unattenuated Lennon going at full blast, but also because as Lennon recalls it now the article was apparently not confined to Toronto, but also blasted off on something else that was bugging him more than somewhat, namely the reaction of Beatledom to Yoko.
1972 — Bob Larson, The Day Music Died, Bob Larson Ministries (1972), →ISBN, page 137:
It was 1963 when the floodgates of Beatledom opened. The result was an international reappraisal of values in business, politics, morals, and the arts. "Beatlemania," it was called.
This was a critic's estimation, not a fan's, since their commercial success never came remotely close to Beatledom.
2006 — Joe Stuessy & Scott Lipscomb, Rock and Roll: Its History and Stylistic Development, Pearson Prentice Hall (2006), →ISBN, page 100:
We shall not attempt to include here every detail nor tell every anecdote of Beatledom[…]
2007 — Kenneth Womack, Long and Wingding Roads: The Evolving Artistry of the Beatles, Continuum (2007), →ISBN, page 83:
The title was delivered from the lips of Ringo, who, after a particularly long and difficult day in Beatledom, was said to have uttered, "It's been a hard day's night."
2009 — Paul Du Noyer, In the City: A Celebration of London Music, Virgin Books (2009), →ISBN, page 97:
Most importantly of all, in the Stones' eyes, he was touched by the magic of Beatledom, having helped Brian Epstein introduce his group to London's media.
2020 — Joe Robinson, Journey Into Beatledom: The Beatles As Prophets, Peaceniks and Holy Writ, Guido Books (2020), →ISBN, [1]:
The Beatles & their journey into Beatledom is thoughtful, imaginative, exuberantly written and painstakingly crafted.