Paw,
She mentions a series or story from
Spellbound in 1977, called '
the strange ones' This features 3 whitehaired schoolgirls complete with matching uniforms - and White Hair, which is the giveaway -who have super 'mental powers'. Impossible for me not to believe that Morrison didn't know of them and put them in the X-men as
The Midwich Cuckoos. And yes I know that the name comes from
John Wyndham.
So we have a double reference from Morrison's X-men.
Keynote 2 Julia Round Possession Spellbound Misty
https://www.youtube.com/watch?v=sZWmeDz5UHA&t=187sfrom 11:46.
Thanks Paw!