New York: Doubleday, 1950. First / First. Hardback. A very good copy. A paired collection of novellas, the first rationalising magic in a scientific manner, the second exploring magic in a more societal, controlled manner. A little rubbing to the jacket and a few little nicks, and a couple of short tears. Top edge dusty, a couple of little bumps to the spine tips and corners. Robert Heinlein (1907-1988) was one of science fiction's leading voices, often called 'The Dean of Science Fiction'. Very Good / Very Good. Item #12566