Human?

• "Introduction", Fredric Brown
• "I: As Others See Us…", Judith Merril
• "The Big Contest", John D. MacDonald (Worlds Beyond 1950)
• "The Boy Next Door", Chad Oliver (F&SF 1951)
• "Take a Seat", Eric Frank Russell (Startling Stories 1952)
• "An Egg a Month from All Over", Idris Seabright (F&SF 1952)
• "Riya’s Foundling", Algis Budrys (Science Fiction Stories #1 1953)
• "II: Earthlings All", Judith Merril
• "ghosts", Don Marquis (Archy and Mehitabel, 1927)
• "Smoke Ghost", Fritz Leiber (Unknown 1941)
• "Who Shall I Say Is Calling?", August Derleth (F&SF 1952)
• "The Gnarly Man", L. Sprague de Camp (Unknown 1939)
• "The Temptation of Harringay", H. G. Wells (The St. James’s Gazette 1895)
• "The Ultimate Egoist", Theodore Sturgeon (Unknown 1941)
• "Rope Enough", John Collier (The New Yorker 1939)
• "III: Tomorrow Will Be Better?", Judith Merril
• "Liar!", Isaac Asimov (Astounding 1941)
• "Who Knows His Brother", Graham Doar (Startling Stories 1952)
• "Crucifixus Etiam", Walter M. Miller, Jr. (Astounding 1953)[2]

P. Schuyler Miller, declaring that Merril "has [n]ever edited a bad anthology, or even a so-so one", described this theme anthology as "span[ning] the gap from H. G. Wells to 1953."[3]