Since the 1980s, Moorcock has tended to write longer, more literary "mainstream" novels, such as "Mother London" and "Byzantium Endures," but he continues to revisit characters from his earlier works, such as Elric, with books such as "The Dreamthief's Daughter" or "The Skrayling Tree." With the publication of the third and last book in this series, "The White Wolf's Son", he announced that he was "retiring" from writing heroic fantasy fiction, though he continues to write Elric's adventures as graphic novels with his long-time collaborators Walter Simonson and the late James Cawthorn (1929–2008). Together, they produced the graphic novel, "Elric: the Making of a Sorcerer", published by DC Comics in 2007. He has also completed his "Colonel Pyat" sequence, dealing with the Nazi Holocaust. This began in 1981 with "Byzantium Endures", continued through "The Laughter of Carthage" (1984) and "Jerusalem Commands" (1992), and culminated with "The Vengeance of Rome" (2006).