Notebook Author:Robert Lowell, Robert Lowell A pivotal book in Robert Lowell's groundbreaking career, Notebook is, as Seamus Heaney has written, "a massive accumulation of unrhymed sonnets, poems of immeditae, unprepossessing, blunt-edged force, which record not so much the public events of [the late 1960s] as the reactions which the events provoked in Lowell's consciousness."