Looks like some careful editing of Wikipedia pages would clean this up immensely, the various isolates strands of BASIC stood out to me.
It's handmade, so it's better but not perfect:
https://app.box.com/s/lo36pbyqi3v2fg1wqefx [Language Family Tree.svg]
https://app.box.com/s/qxq4ohxfv44j3euas5gl [Language Family Tree.graffle]