You can suggest short stories, or novels, centered on aliens (extraterrestrials).
Apart from the War of the Worlds, and a number of Lovecraft's works (cause in the early ones the monstrous beings aren't termed as visitors from other stars, or colonists from other worlds), i don't think i am aware of any other *interesting* mythos on this subject, at least originating from an actual written story or longer book. I have heard of some of the concurrent authors durings Lovecraft's lifetime, writing stories with alien beings, but i was not tempted to have a look at their creation..
I'll leave you with the famous "The temptation of St. Cockney":
Apart from the War of the Worlds, and a number of Lovecraft's works (cause in the early ones the monstrous beings aren't termed as visitors from other stars, or colonists from other worlds), i don't think i am aware of any other *interesting* mythos on this subject, at least originating from an actual written story or longer book. I have heard of some of the concurrent authors durings Lovecraft's lifetime, writing stories with alien beings, but i was not tempted to have a look at their creation..
I'll leave you with the famous "The temptation of St. Cockney":