Vol. 19, No. 5. Table of contents: 8 · Frontier of the Unknown [Part 1 of 2] · Norman L. Knight · na 34 · Zero as a Limit · Robert Moore · ss 44 · Interplanetary Dividends · John W. Campbell, Jr. · ar 52 · Sterile Planet · Nat Schachner · nv 71 · Fusible Alloys · Willy Ley · ar 75 · The Great Ones · Leslie F. Stone · nv 90 · Einleill · R. R. Winterbotham · ss 96 · Dawn-World Echoes · Raymond Z. Gallun · nv 115 · Galactic Patrol · F. Orlin Tremaine · ed 116 · Quicksilver, Unlimited · Harry Walton · ss 124 · Seeker of To-morrow · Eric Frank Russell & Leslie J. Johnson · na; given as by Eric Frank Russell & Leslie T. Johnson. 155 · Letters. First edition here. 【 PREVIOUS ISSUE ← July 1937 → NEXT ISSUE 】