Elmer E. Ferris
4 appearances across 4 restored issues — every one readable in full, free.
The Blue Book Magazine, July 1919 — 1919 “A Selling Slump” · p.57 Read the full issue (212 pages) → 
The Blue Book Magazine, December 1919 — 1919 “Why Not I?” · p.42 Read the full issue (216 pages) → 
The Blue Book Magazine, February 1920 — 1920 “Wager of Battle” · p.93 Read the full issue (210 pages) → 
The Blue Book Magazine, April 1920 — 1920 “The Case of Jimmy Madden” Read the full issue (212 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.