This was meant to be a review of the Folio book, but turned into a whole collection video, hopefully you won't mind!
Some links of people describing the books and the differences in editions better than I could:
https://seymourebel.wordpress.com/?s=...
http://www.icknieldindagations.com/20...

0:00 Introduction and publication history
2:53 The Sword in the Stone (1950 St James's Library edition)
4:41 The Witch in the Wood (1939 US first edition)
6:22 The Once and Future King (1958 UK first edition)
7:15 The Once and Future King (2003 Folio Society edition)
8:40 The Book of Merlyn (1977 University of Texas Press first edition)

Music: Sir Cubworth Magical Forest