Human?

Judith Merril with John Collier (Contributor), Fredric Brown (Contributor), Don Marquis (Contributor), John D. MacDonald (Contributor), Idris Seabright (Contributor), Fritz Leiber (Contributor), Graham Doar (Contributor), Algis Budrys (Contributor), Walter M. Miller Jr. (Contributor), Isaac Asimov (Contributor), H.G. Wells (Contributor), Eric Frank Russell (Contributor), Theodore Sturgeon (Contributor), August Derleth (Contributor), L. Sprague de Camp (Contributor), Chad Oliver (Contributor)