John W. Osbon
5 appearances across 5 restored issues — every one readable in full, free.
Beadle's Half Dime Library, No. 469 — 1886 “The Brothers League” · p.1 Read the full issue (16 pages) → 
Beadle's Half Dime Library, No. 564 — 1888 “The Man Without a Past” (serial) · p.1 Read the full issue (16 pages) → 
Beadle's Half Dime Library No. 609 — 1889 “Little Lightning's Invincibles: A Romance of Yellow Dust City” · p.1 Read the full issue (16 pages) → 
Beadle's Half Dime Library, No. 751 — 1891 “Wiping Out Old Nick's Nine” · p.1 Read the full issue (16 pages) → 
The Brand Burners of Cimarron — 1897 “The Brand-Burners of Cimarron” (serial) · p.4 Read the full issue (36 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.