Introduction -- The martian shop / Howard Fast -- Walk like a mountain / Manly Wade Wellman -- Men of iron / Guy Endore -- Rabbits to the moon / Raymond E. Banks -- The certificate / Avram Davidson -- The sealman / John Masefield -- The sky people / Poul Anderson -- The causes / Idris Seabright -- The hypnoglyph / John Anthony -- A tale of the thirteenth floor / Ogden Nash -- Spud and Cochise / Oliver La Farge -- Unto the fourth generation / Isaac Asimov -- Jordan / Zenna Henderson -- Will you wait? / Alfred Bester -- Proof positive / Graham Greene -- Shock treatment / J. Francis McComas -- Gandolphus / Anthony Boucher -- The last shall be first / Robert P. Mills -- A trick or two / John Novotny -- Lot's daughter / Ward Moore -- Saturnian Celia / Horace Walpole -- Fear is a business / Theodore Sturgeon -- Meeting of relations / John Collier -- First lesson / Mildred Clingerman -- To fell a tree / Robert F. Young.