Juggernaut has invaded the mansion and the X-Men struggle to take down Xavier's unstoppable half-brother. Human Torch lends a hand and Professor X is able to bring his brother down.
in Fantastic! (IPC, 1967 series) #24 (29 July 1967) [Black and white, pages 1-10 and the upper tier of page 11 only.], #25 (5 August 1967) [Pages 11 to 20 only, black and white.]
Letters from: Larry Borden, Orrin R. Russell, Jr., Philip Gouse, Gary Walker, Eddie Eddings, Roger Gilman, Guy H. Lillian, and Pedro Higgins; Mighty Marvel Checklist; coupon to join the MMMS.