Gustave Aimard
3 appearances across 3 restored issues — every one readable in full, free.
Beadle's Dime Library, No. 149 — 1881 “The Border Rifles: A Tale of the Texan War” (serial) · p.1 Read the full issue (32 pages) → 
Beadle's Dime Library No. 151 — 1881 “The Freebooters” · p.1 Read the full issue (32 pages) → 
The Prairie Pirates — 1882 “The Prairie Pirates; Or, The Hunter's Revenge” (serial) · p.5 Read the full issue (132 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.