W. Elwyn Backus
5 appearances across 5 restored issues — every one readable in full, free.
Weird Tales, Vol. 6, No. 5 — 1925 “The Waning of a World (Part One)” (serial) · p.647 Read the full issue (148 pages) → 
Weird Tales, January 1926 — 1926 “The Waning of a World (Part Three)” (serial) Read the full issue (148 pages) → 
Weird Tales, Vol. VII, No. 2 — 1926 “The Waning of a World (Conclusion)” (serial) Read the full issue (148 pages) → 
Weird Tales, April 1927 — 1927 “The Youth-Maker” Read the full issue (148 pages) → 
Weird Tales, Vol. 9 No. 4 — 1927 “The Youth-Maker” Read the full issue (148 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.