<P> "O Captain! My Captain!" is an extended metaphor poem written in 1865 by Walt Whitman, about the death of American president Abraham Lincoln . The poem was first published in the pamphlet Sequel to Drum - Taps which assembled 18 poems regarding the American Civil War, including another Lincoln elegy, "When Lilacs Last in the Dooryard Bloom'd". It was included in Whitman's comprehensive collection Leaves of Grass beginning with its fourth edition published in 1867 . The poem emphasizes or shows grief and sorrow . </P> <P> O Captain! my Captain! our fearful trip is done; The ship has weather'd every rack, the prize we sought is won; The port is near, the bells I hear, the people all exulting, While follow eyes the steady keel, the vessel grim and daring: </P>

When did walt whitman wrote o captain my captain