Published Jun 1974 by Marvel.
Cover art by George Tuska and Marie Severin (alterations). The Mark of the Monster, script by Roy Thomas, pencils by Don Heck, inks by George Tuska; the X-Men battle the Frankenstein monster, who is revealed SPOILER WARNING to be an android; reprinted from issue 40. Thru the Lens, art by Joe Maneely. 36 pgs. $0.25. Cover price $0.25.