/lit/ - Literature

>>20490589
What Lovecraft stories should I read if I want to write a story about humanity fighting cosmic horrors by making something potentially worse? The idea I have so far is humanity pouring all of its resources into a machine to kill Cthulhu or similar entity at the cost of most of human civilization.
I'm looking for stories that go more into detail on the creatures beyond "I saw a space squid and now I'm CuRaHzY!" I've already read Shadow out of Time and I'm currently listening to the audio book version of Call of Cthulhu. I'm still on the fence if I want to set in the actual Mythos or just something Mythos inspired, so recommendations outside of Lovecraft would also be appreciated.