Before analyzing its presence on Archive.org, it is essential to define the original project:
The audio material on Archive.org is exceptionally popular, including high-quality rips of the Anthology 1, 2, and 3 albums, as well as associated radio specials. beatles anthology archive.org
"The Beatles Anthology" book — Leads directly to the digitized print editions in the Open Library. Useful Collections to Explore Before analyzing its presence on Archive