Harl Vincent
4 appearances across 4 restored issues — every one readable in full, free.
Amazing Stories, August 1930 — 1930 “Free Energy” Read the full issue (99 pages) → 
Astounding Stories of Super-Science, August 1930 — 1930 “Silver Dome” Read the full issue (149 pages) → 
Astounding Stories of Super-Science — 1930 “Vagabonds of Space” Read the full issue (149 pages) → 
Astounding Stories of Super-Science, Vol. 4, No. 3 — 1930 “Gray Denim” Read the full issue (151 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.