A couple of weeks after Neal Adams had started drawing the graphic novel, Jim Shooter, Marvel’s editor-in-chief, told him “I can’t put the contract together. I can’t do it.” Neal had insisted on a contract that wasn’t a work-made-for-hire agreement. Shooter then turned to Brent Anderson and the rest is history.
Here are Adams' pages:
Adams’ opening scene has Magneto being attacked by the Purifiers whereas the final product had that rather controversial opening with the Purifiers killing the two young mutants and Magneto coming across their bodies.