Astounding Science-Fiction July 1941
Author: John W. Campbell Jr.
Desc: Contents: "We Have with Us—" / essay by John W. Campbell Jr. Methuselah's Children (Part 1 of 3 Lazarus Long series) / serial by Robert A. Heinlein; interior artwork by H. Rogers In Times to Come / essay by The Editor The Analytical Laboratory: May 1941 (/ essay by The Editor Spaceship in a Flask / Clifford D. Simak; interior artwork by Frank Kramer The Seesaw (Weapon Shops of Isher series) / by A.E. van Vogt; interior artwork by Charles Schneeman The Probable Man / Alfred Bester; interior artwork by Frank Kramer Vermin of the Sky / essay by R.S. Richardson The Geometrics of Johnny Day / by Nelson S. Bond; interior artwork by Charles Schneeman We Also Walk Dogs (Future History series) / Robert A. Heinlein (as by Anson MacDonald]; interior artwork by Kolliker More Than Giant Mirrors Needed / essay Brown / by Frank Belknap Long; interior artwork by Frank Kramer Brass Tacks / essay by The Editor Letter / essay by Allan Ingvald Benson Letter / essay by L. Sprague de Camp Letter / essay by Harry Warner Jr.