X-Men was a bit of the red-headed stepchild of 1960s Marvel Comics. It didn’t sell extremely well, and neither of the team’s co-creators, Stan Lee and Jack Kirby, remained on the title for very long.

“X-Men” -- 23 pages
- pencils by Jack Kirby; inks by Paul Reinman
first issue; cover by Sol Brodsky and Jack Kirby; published by Marvel Comics; cover-dated Sept 1963

“No one can stop The Vanisher!” -- 22 pages
- pencils by Jack Kirby; inks by Paul Reinman

“Beware of The Blob!” -- 24 pages
- pencils by Jack Kirby; inks by Paul Reinman

“The Brotherhood of Evil Mutants!” -- 23 pages
- pencils by Jack Kirby; inks by Paul Reinman

“Trapped: One X-Man!” -- 24 pages
- pencils by Jack Kirby; inks by Paul Reinman

“Sub-Mariner joins The Evil Mutants!” -- 22 pages
- pencils by Jack Kirby; inks by Chic Stone

“The return of The Blob!” -- 22 pages
- pencils by Jack Kirby; inks by Chic Stone

“The uncanny threat of…Unus, The Untouchable!” -- 20 pages
- pencils by Jack Kirby; inks by Chic Stone

“Enter, the Avengers!” -- 20 pages
- pencils by Jack Kirby; inks by Chic Stone
Marvel Girl pin-up -- 1 pages
- pencils by Jack Kirby; inks by Chic Stone

“The Coming of…Ka-Zar!” -- 20 pages
- pencils by Jack Kirby; inks by Chic Stone

“The Triumph of Magneto!” -- 20 pages
- pencils by Jack Kirby; inks by Chic Stone

first issue; reprints X-Men Vol. 1 #9 and #11; cover taken from X-Men Vol. 1 #9; published by Marvel Comics; cover-dated Dec 1970

“The Origin of Professor X!” -- 20 pages
- pencils by Jack Kirby and Alex Toth; inks by Vincent Colletta
- continues into X-Men Vol. 1 #13

“Where walks The Juggernaut!” -- 20 pages
- pencils by Jay Gavin and Jack Kirby; inks by Joe Sinnott


“Among us stalk…The Sentinels!” -- 20 pages
- pencils by Jay Gavin and Jack Kirby; inks by Vincent Colletta

“Prisoners of the mysterious Master Mold!” -- 20 pages
- pencils by Jay Gavin and Jack Kirby; inks by Richard Ayers


“The Supreme Sacrifice!” -- 20 pages
- pencils by Jay Gavin and Jack Kirby; inks by Richard Ayers

“…and none shall survive!” -- 20 pages
- pencils by Jay Gavin and Jack Kirby; inks by Richard Ayers

“If Iceman should fail…!” -- 20 pages
- pencils by Jay Gavin; inks by Richard Ayers


“Lo! Now should appear The Mimic” -- 20 pages
- pencils by Jay Gavin; inks by Richard Ayers
