Instruction: Who are some of the most famous weird fiction authors, who wrote in the early 20th century, aside from H. P. Lovecraft? And what is a good short story from each that I might like, if I like H. P. Lovecraft?

Response: Some well-regarded weird fiction authors from the early 20th century include Arthur Machen ("The White People"), Clark Ashton Smith ("The Vaults of Yoh-Vombis"), and Robert W. Chambers ("The Repairer of Reputations").