Henry Slesar
4 appearances across 4 restored issues — every one readable in full, free.
Amazing Stories, July 1956 — 1956 “THE MONUMENT” · p.47 Read the full issue (132 pages) → 
Amazing Stories: 20 Million Miles to Earth — 1957 “20 Million Miles to Earth” (serial) · p.8 Read the full issue (132 pages) → 
Amazing Stories, May 1963 — 1963 “JOBO” (novelette) · p.6 Read the full issue (132 pages) → 
Amazing Stories, July 1969 — 1969 “NO PLACE TO GO” · p.106 Read the full issue (148 pages) → Appearances are extracted from each issue's own printed contents page; entries we can't read confidently are withheld rather than guessed.