A self-styled sketch runs, “Walt Whitman, an American, one of the roughs, a kosmos.” He could have added journalist, carpenter, nurse, and one of the greatest poets in English. This program presents a unique literary biography, tracing Whitman’s childhood, various careers, and the evolution of the masterpiece that proved his lifelong work, Leaves of Grass. A collage of photos, paintings, and manuscripts accompanies excerpts of letters from Whitman and Ralph Waldo Emerson, as well as readings from sections of Leaves of Grass, such as “Song of Myself,” “I Sing the Body Electric,” and “Native Moments.” (22 minutes)