Is this the official first meeting of the X-Men and Spider-Man? I used to think it was, but I haven't been able to confirm. Either way, I've always loved this cover. :
Es Spider-Man también un mutante en Marvel como los X-Men?
Spider-Man & the X-Men (2014 - 2015) | Comic Series | Marvel
SPIDERMAN / X-MEN (1998, PLANETA-DEAGOSTINI) - Ficha de número en Tebeosfera