X-Men (1991-2001) is a 16-book series with 16 released primary works first released in 1991 with contributions by Scott Lobdell, Bob Harras, Fabian Nicieza, Terry Kavanagh, Alan Davis, Chris Claremont, Joe Rosas, Suzanne Gaffney, Tom DeFalco, Tom Orzechowski, Ian Edginton, Jim Krueger, Joe Kelly, and Jorge González.