The tunnel under the world / Frederik Pohl -- Brother robot / Henry Slesar -- The lifeboat mutiny / Robert Sheckley -- The warm space / David Brin -- How-2 / Clifford D. Simak -- Too robot to marry / George H. Smith -- The education of Tigress McCardle / C. M. Kornbluth -- Breakfast of champions / Thomas Easton -- Sun up / A. A. Jackson, IV & Howard Waldrop -- Second variety / Philip K. Dick -- The problem was lubrication / David R. Bunch -- First to serve / Algis Budrys -- Two-handed engine / Henry Kuttner & C. L. Moore -- Though dreamers die / Lester del Rey -- Soldier boy / Michael Shaara -- Farewell to the master / Harry Bates