Darwin, Charles. THE DESCENT OF MAN and Selection in Relation to Sex. With a Preface by Ashley Montagu and Drawings by Fritz Kredel. Post 4to; pp. [ii], xx, 362; numerous text illustrations, supplemental note, extensive index; original quarter black leatherette, with cloth sides, gilt; a fine copy in slipcase. Norwalk, Connecticut; The Heritage Press; (1972) [but later c. 1975?].