Earth's Other Shadow — Robert Silverberg

Signet, 1973. Mass market paperback, one of several printings. Collects nine stories: "Something Wild Is Loose" (1971); "To See the Invisible Man" (1963); "Ishmael in Love" (1970); "How It Was When the Past Went Away" (1969); "To the Dark Star" (1968); "The Fangs of the Trees" (1968); "Hidden Talent" (1957); "The Song the Zombie Sang" (1970)" (with Harlan Ellison); "Flies" (1967).