This story could conceivably be in Marvel continuity, in which case this might be any of the three Merlins. Job number unknown according to Dr. Michael J. Vassallo via the Atlas/Timely discussion group. Story is pages 3-7 of comic (pages of story numbered 1 to 5).
Text story with illustration. Text story is pages 8, 26 of comic (pages of story not numbered).
Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. Story is pages 10-14 of comic (first page of story not numbered, then pages numbered 2 to 5).
Possible Wessler script per Nick Caputo from information in Robin Snyder's The Comics, Vol 26, No.4, April 2015. This may be a Wessler inventory story originally titled "Saucer Scare".
Narrated. Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. Story is pages 16-18, 20 of comic (pages of story numbered 1 to 4).
Possible Wessler script per Nick Caputo from information in Robin Snyder's The Comics, Vol 26, No.4, April 2015. A Wessler inventory story was originally titled "The Man That Couldn't Die"
Set in 1969. Pencil credit, ink credit, and job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. Story is pages 21-24 of comic (pages of story numbered 1 to 4).
This story is a retelling of "Men in Black" by Stan Lee and John Romita, Sr. from Menace (Marvel, 1953 series) #3 (May 1953). The hoods are more clearly a reference to the Ku Klux Klan than in the original (they are not randomly chosen disguises, but something the bigot's "pappy left me when he died").
Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. Lee is credited as writer on the basis of his authorship of the original and later retelling. Story is pages 28-32 of comic (pages of story numbered 1 to 4, last page not numbered).