The Official Handbook of the Marvel Universe #3

Published by Marvel Comics in 1983, The Official Handbook of the Marvel Universe was a pioneering reference series designed to organize the sprawling, decades-long continuity of the Marvel Multiverse. Created during the editorship of Mark Gruenwald, the project was intended to serve as a comprehensive encyclopedia that provided definitive biographical, physiological, and power-level data for characters ranging from major icons to obscure figures. The series was a landmark effort in comic book publishing, setting a standard for narrative internal consistency and world-building that influenced how fans and creators interacted with long-running comic lore.

The third issue of the original series covers characters alphabetically from 'Co' to 'Ea', including notable figures such as Doctor Doom, Doctor Octopus, and the Enchantress. The art was produced by a rotating staff of Marvel's house artists, with technical illustrations and diagrams emphasizing a grounded, pseudo-scientific aesthetic. Upon release, the handbook was highly regarded by readers and industry professionals for its meticulous detail and clarity, effectively codifying the Marvel Universe into a coherent, manageable format that remains a significant artifact of the company’s history.