Okay, so if you’re new here like me and you’re a fan of the older comic books, you probably did a search for Justice League International and came up with only the 2011 series… Which isn’t bad just, not what you’re after.
Well don’t sweat it! Just look up Justice League America 1987 and there it is! Around issue No. 26 they stopped being so international.
I’m not sure if this helps anyone or if it’s really necessary but, this is my first post and I wanted it to be helpful.