Fred Maclsaac
4 appearances across 4 restored issues — every one readable in full, free.
Argosy All-Story Weekly, April 18, 1925 — 1925 “Pott. Vioney” (serial) Read the full issue (172 pages) → 
Argosy All-Story Weekly, June 27, 1925 — 1925 “We Want Mabel!” · p.833 Read the full issue (168 pages) → 
Argosy All-Story Weekly, May 5, 1928 — 1928 “Red Hot” (serial) · p.627 Read the full issue (156 pages) → 
Argosy All-Story Weekly, July 7, 1928 — 1928 “World Brigands” (serial) · p.217 Read the full issue (150 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.