Leipzig und Wien: Franz Deuticke, 1911. Hardcover. Third Edition. This is Freud’s greatest work and one of the most influential books of the twentieth century. First published in 1899, the book introduced Freud’s theory of the unconscious with respect to dream interpretation, his theories of psychoanalysis, and the subconscious. Its influence has extended far outside the field of psychiatry into culture and literature. Very good in brown cloth with marbled paper covered boards and gilt title to spine. Minor fraying and wear to spine ends, joints, and edges of boards. The interior hinges have been repaired with green binder’s tape. A crack is visible to the gutter between the colophon and last page. Light foxing and previous owner’s signature in pen on the half title page. 414 pages. PSYCH/051512. Very Good.