X-Men (vol. 1) #66
Title: “The Mutants and the Monster”
Medium: comic
Cover date: Mar. 1970
Publisher:Number of Pages: 20
18 characters in this story:
This publication is also known as: The Uncanny X-Men (vol. 1) #66.
Note that this is the last new X-Men story published in the series before the series began an extended period (nearly 30 issues) of publishing nothing but stories reprinted from earlier in the series. The next new story published in this series will not appear until issue #94 (Aug. 1975).