Ballantine Books, mass market paperback. One of several printings. First published in 1956, this is the author's second collection of science fiction tales. Collects eight stories: Project Hush (1954); The Discovery of Morniel Mathaway (1955); Wednesday's Child (1956); The Servant Problem (1955); Party of the Two Parts (1954); The Flat-Eyed Monster (1955); The Human Angle (1948); A Man of Family (1956).