A set of eight volumes split into four books. A mix of second and third printings. Bound in red cloth with gilt text on spines. Some scuffing to outter boards. Volume V/VI have former owner's name in pen on front end paper. VolumeI/II have some penciled annotations and a few wrinkled pages due to slight water damage. Each book contains two volumes. The volumes include Principles of Philosphy; Elements of Logic; Exact Logic; The Simplest Mathematics; Pragmatism and Pragmaticism; Scientific Metaphysics; Science and Philosophy; Reviews, Correspondence, and Bibliography