On Sat, 16 Jan 1999, MR WILLIAM R GEIGER wrote:

Something I remember is that Cthulu is supposed to be destroyed by 
The Great Race of Yith. Perhaps
they were the ones who imprisoned him and when he gets out, decide to 
finish the job

while john is the main lovecraft man here, I know enough
to say that unless this is something HPL directly stated,
I'm greatly reluctant to use it.  Not 100% opposed to it,
but still greatly reluctant.

-rod