Edgar Rice Burroughs
3 appearances across 3 restored issues — every one readable in full, free.
Argosy All-Story Weekly, January 13, 1923 — 1923 “Tarzan and the Golden Lion” (serial) Read the full issue (184 pages) → 
Argosy All-Story Weekly — 1924 “The Bandit of Hell's Bend” (serial) Read the full issue (180 pages) → 
Argosy All-Story Weekly, March 15, 1924 — 1924 “Tarzan and the Ant Men” (serial) · p.772 Read the full issue (177 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.