Jackson Knox (Old Hawk)
5 appearances across 5 restored issues — every one readable in full, free.
Beadle's New York Dime Library No. 501 — 1888 “The Relentless Shadower: A History of the Willard Mystery” · p.1 Read the full issue (32 pages) → 
Beadle's Dime Library No. 509 — 1888 “The Fateful Legacy: The Romances of a Celebrated Case” (serial) · p.1 Read the full issue (32 pages) → 
Beadle's New York Dime Library No. 515 — 1888 “Old Falcon's Master Game” (serial) · p.1 Read the full issue (32 pages) → 
Beadle's Dime Library No. 548 — 1889 “The Siren of the Baleful Eye: The Romance of a Strange Case” · p.1 Read the full issue (32 pages) → 
Beadle's Dime Library No. 778: 'The Butler Detective; or, Old Grip's Grip' — 1893 “The Butler Detective; or, Old Grip's Grip” (serial) · p.1 Read the full issue (32 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.