What to read after King Arthur and His Knights, The Champions of the Round Table & Sir Lancelot?

"The Story of King Arthur and His Knights" - First part of the book tells how young Arthur pulled a sword out of an anvil, how he learned of his royal lineage, and how he thus became king. Second part tells the stories of Merlin, Sir Pellias, Sir Gawaine and other noble knights. "The Story of the Champions of the Round Table" consists of many Arthurian legends, including those concerning of the young Sir Lancelot, Sir Tristan, and Sir Percival. "The Story of Sir Launcelot and His Companions" consists of a large series of episodes in the legend of the chief knight of the Round Table, Sir Lancelot, and many of his friends, including the Lady Elaine, Sir Ewaine, and Sir Gareth.