Morgan Mansfield
3 appearances across 3 restored issues — every one readable in full, free.
Argosy All-Story Weekly, April 7, 1928 — 1928 “His Service to Folly” (serial) · p.46 Read the full issue (160 pages) → 
Argosy All-Story Weekly, April 14, 1928 — 1928 “His Service to Folly” (serial) · p.232 Read the full issue (152 pages) → 
Argosy All-Story Weekly — 1928 “His Service to Folly” (serial) · p.802 Read the full issue (164 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.