This is an attempt to do a list of all the X-Men books in thicker collections - we'll say collections which are about 250+ pages, as Marvel does the short collections shortly after printing the single issues (this can range from 3-7 in most cases) and later reprint these into bigger collections.

This will cover the 90s from the "Age of Apocalypse" (circa Uncanny X-Men #320 and X-Men #40) to "Ages of Apocalypse" (Uncanny X-Men #378 and X-Men #98). I wanted to expand this list further but when making this list on this site, it felt rather limited, so I'll leave this as is. Feel free to edit further if someone wants to run with it