Francis Flagg
4 appearances across 4 restored issues — every one readable in full, free.
Amazing Stories, Vol. 2 No. 8 — 1927 “The Machine Man of Ardathia” · p.798 Read the full issue (100 pages) → 
Amazing Stories, Vol. 2 No. 8 — 1927 “The Machine Man of Ardathia” · p.798 Read the full issue (102 pages) → 
Amazing Stories, Vol. 2 No. 8 — 1927 “The Machine Man of Ardathia” Read the full issue (102 pages) → 
Amazing Stories, Vol. 3, No. 2 — 1928 “The Master Ants” Read the full issue (100 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.