| 1 | Giant-Size X-Men | Reprints from X-Men (1st Series) #43; 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); Origin of Nightcrawler (Kurt Wagner); Origin of Storm (Ororo Munroe) |
| 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 Krakoa; 1st appearance of Nightcrawler (Kurt Wagner); 1st appearance of Storm (Ororo Munroe); 1st appearance of Thunderbird (John Proudstar); Origin of Nightcrawler (Kurt Wagner); Origin of Storm (Ororo Munroe); Mini-comic Giveaway; Packaged with Marvel Authentics Die-Cast Car Series I |
| 1 | Giant-Size X-Men (Marvel Deutschland) | Reprints from X-Men (1st Series) #43; 1st Appearance of Colossus; 1st appearance of Colossus (Peter Rasputin); 1st Appearance of Illyana Rasputin; 1st appearance of Illyana Rasputin; 1st Appearance of Nightcrawler; 1st appearance of Nightcrawler (Kurt Wagner); 1st Appearance of Storm; 1st appearance of Storm (Ororo Munroe); 1st Appearance of Thunderbird; 1st appearance of Thunderbird (John Proudstar); 1st Appearance of X-Men (new); Origin of Nightcrawler; Origin of Nightcrawler (Kurt Wagner); Origin of Storm; Origin of Storm (Ororo Munroe); Summer 1975 |