The Illustrated History of Warren Magazines is now available in a new “revised and expanded” edition, with the original being Illustrators Special No. 14, which lists on Amazon UK as “The Illustrated History of Warren Comics”.
Still fairly short, at 152 illustrated pages. Also covers 1984, which took material from the European Toutian edited titles which were Metal Hurlant competitors.
This June 2023 version is said to have a new chapter at the back, as well as a few tweaks for the former layout and text. Publisher’s page at The Book Palace.
Elsewhere, for free, Dark Worlds is surveying Sword and Sorcery at Warren and has so far reached the mid 1970s.