Timeline: 1978

1978

March

31^st  UXM 1: The X-Men.

April

1^st     UXM 1: The X-Men.
3^rd    UXM 2: No-one Can Stop the Vanisher!
4^th    UXM 2: No-one Can Stop the Vanisher!
5^th    UXM 2: No-one Can Stop the Vanisher!
6^th    UXM 2: No-one Can Stop the Vanisher!
7^th    UXM 2: No-one Can Stop the Vanisher!

22^nd UXM 3: Beware of the Blob!
23^rd UXM 4: The Brotherhood of Evil Mutants!
24^th UXM 4: The Brotherhood of Evil Mutants!
25^th UXM 4: The Brotherhood of Evil Mutants!
26^th UXM 4: The Brotherhood of Evil Mutants!
27^th UXM 4: The Brotherhood of Evil Mutants!
28^th UXM 4: The Brotherhood of Evil Mutants!
29^th UXM 4: The Brotherhood of Evil Mutants!
30^th UXM 4: The Brotherhood of Evil Mutants!

May

1^st    UXM 4: The Brotherhood of Evil Mutants!
2^nd   UXM 4: The Brotherhood of Evil Mutants!

6^th   UXM 5: Trapped: One X-Man!
7^th    UXM 5: Trapped: One X-Man!

13^th UXM 6: Submariner! Joins the Evil Mutants.
14^th UXM 6: Submariner! Joins the Evil Mutants.
15^th UXM 6: Submariner! Joins the Evil Mutants.

June

29^th UXM 7: Return of the Blob.
30^th UXM 7: Return of the Blob.

July

1^st   UXM 8: The Uncanny Threat of... Unus the Untouchable!
2^nd  UXM 8: The Uncanny Threat of... Unus the Untouchable!
3^rd   UXM 8: The Uncanny Threat of... Unus the Untouchable!
4^th   UXM 8: The Uncanny Threat of... Unus the Untouchable!
5^th   UXM 8: The Uncanny Threat of... Unus the Untouchable!
6^th   UXM 8: The Uncanny Threat of... Unus the Untouchable!
7^th   UXM 8: The Uncanny Threat of... Unus the Untouchable!
8^th   UXM 8: The Uncanny Threat of... Unus the Untouchable!
15^th UXM 9: Enter: the Avengers. 
16^th UXM 9: Enter: the Avengers.
17^th UXM 9: Enter: the Avengers.
18^th UXM 9: Enter: the Avengers.
19^th UXM 9: Enter: the Avengers.
29^th X1C 1:  The Job Shadow.

August

15^th UXM 10: The Coming of... Ka-Zar.
22^nd UXM 11: The Triumph of Magneto!
22^nd UXM 12: The Origin of Professor X.
22^nd UXM 13: Where Walks the Juggernaut!

September

5^th   UXM 14: Among us Stalk... the Sentinels! 
6^th   UXM 14: Among us Stalk... the Sentinels! 
6^th   UXM 15: Prisoners of the Mysterious Master Mold!
6^th   UXM 16: The Supreme Sacrifice
6^th   UXM 17: ...And None Shall Survive!
7^th   UXM 17: ...And None Shall Survive!
7^th   UXM 18: ...If Iceman Should Fail!
8^th   UXM 18: ...If Iceman Should Fail!
9^th    X1C 1: X-Men 101.
11^th X1C 2: The Bird, The Beast, and the Lizard.
17^th X1C 3: A Life of the Mind.

 October

1^st    X1C 7: Who Wants to Date a Millionaire?
2^nd   X1C 8: The Treasure Hunters
3^rd   X1C 8: The Treasure Hunters
5^th    XIC 2: Island X
6^th    XIC 2: Island X
7^th    XIC 2: Island X
8^th    XIC 2: Island X
9^th    XIC 2: Island X (Part 2)
10^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
11^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
12^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
13^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
14^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
15^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
16^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
17^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
18^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
19^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
20^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
21^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
22^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
23^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
24^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
25^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
26^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
27^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
28^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
29^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon
30^th X1C 1: Museum of Oddities - The Soul of a Poet - A Girl and her Dragon

November

1^st   UXM 19: Lo!  Now Shall Appear -- The Mimic!
2^nd  UXM 19: Lo!  Now Shall Appear -- The Mimic!
6^th   UXM 20.  I, Lucifer...
6^th  UXM 21.  From Whence Comes... Dominus?
7^th  UXM 21.  From Whence Comes... Dominus?

(Titles in blue represent the second volume  Titles in red represent specials.)