First Sf Survivors

[faustus]

I'm trying to put together a list of sf writers active before 1950 - although I may push that back to 1945 or 1940 - and publishing sf in the 1970s. I've got:

1. Isaac Asimov
   
2. Alfred Bester
   
3. Leigh Brackett
   
4. Ray Bradbury
   
5. Arthur C. Clarke
   
6. Robert A. Heinlein
   
7. Andre Norton
   
8. Theodore Sturgeon
   
9. A.E. van Vogt
   
10. Jack Williamson
    

Naomi Mitchinson is a separate issue - she's not exactly first/agenda sf.

There's one Edmond Hamilton story, which I think I can skip over, Hubbard is busy, ah, I probably need to think about Jack Vance. I just wonder if I've missed the bleeding obvious.