Considered a central figure of Pop, installation art, and Happenings, Claes Oldenburg redefined existing notions of art in the 1960s with his landmark environments 'The Street' and 'The Store', his soft sculptures and his proposals for monuments. Since his arrival in New York in 1956, Oldenburg's prolific production has always been accompanied by a daily practice of writing that reveals the conceptual complexity and diversity of his inventive oeuvre. Comprising the artist's key writings from the late 1950s and 1960s, this volume makes available a wealth of previously unpublished material, including sections of the diary Oldenburg kept during these formative years, his notes (written on an old typewriter in his studio while standing), facsimiles of sketches that show his abiding interest in the relationship between image and language, plus statements, essays, scripts for Happenings and poems.