Fred MacIsaac
5 appearances across 5 restored issues — every one readable in full, free.
Argosy All-Story Weekly — 1924 “Nothing But Money” (novelette) Read the full issue (166 pages) → 
Argosy All-Story Weekly, April 4, 1925 — 1925 “Soft Money” (serial) Read the full issue (182 pages) → 
Argosy All-Story Weekly, April 14, 1928 — 1928 “Red Hot” (serial) · p.167 Read the full issue (152 pages) → 
Argosy All-Story Weekly, April 28, 1928 — 1928 “Red Hot” (serial) · p.507 Read the full issue (148 pages) → 
Argosy All-Story Weekly — "Sea Marauders" — 1928 “Sea Marauders” Read the full issue (156 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.