| 1 | Giant-Size X-Men | Reprints from X-Men (1st Series) #43; 1st appearance of Illyana Rasputin; 1st appearance of Nightcrawler (Kurt Wagner); 1st appearance of Storm (Ororo Munroe); 1st appearance of Thunderbird (John Proudstar); 1st appearance of Colossus (Peter Rasputin); Origin of Storm (Ororo Munroe); Origin of Nightcrawler (Kurt Wagner) |
| 1-2 | Giant-Size X-Men | Reprints from Giant-Size X-Men #1; 1st Appearance of Colossus (Peter Rasputin); 1st appearance of Illyana Rasputin; 1st appearance of Nightcrawler (Kurt Wagner); 1st appearance of Storm (Ororo Munroe); 1st appearance of Thunderbird (John Proudstar); 1st appearance of Krakoa; Origin of Nightcrawler (Kurt Wagner); Origin of Storm (Ororo Munroe); Packaged with Marvel Authentics Die-Cast Car Series I; Mini-comic Giveaway |
| 1 | Giant-Size X-Men (Marvel Deutschland) | Reprints from X-Men (1st Series) #43; 1st Appearance of Illyana Rasputin; 1st Appearance of Nightcrawler; 1st Appearance of Storm; 1st Appearance of Thunderbird; 1st Appearance of X-Men (new); 1st Appearance of Colossus; 1st appearance of Nightcrawler (Kurt Wagner); 1st appearance of Storm (Ororo Munroe); 1st appearance of Thunderbird (John Proudstar); 1st appearance of Colossus (Peter Rasputin); 1st appearance of Illyana Rasputin; Origin of Storm; Origin of Storm (Ororo Munroe); Origin of Nightcrawler (Kurt Wagner); Origin of Nightcrawler; Summer 1975 |
| 8 | Uncanny Origins | Origin of Nightcrawler (Kurt Wagner) |
| 8 | Untold Tales of Spider-Man/Uncanny Origins | Origin of Nightcrawler (Kurt Wagner); Collects Untold Tales of Spider-Man #20 and Uncanny Origins #8; Flipbook |
| 8/NS | Untold Tales of Spider-Man/Uncanny Origins | Origin of Nightcrawler (Kurt Wagner); Collects Untold Tales of Spider-Man #20 and Uncanny Origins #8; Flipbook |