About “O Captain! My Captain!”
"O Captain! My Captain!" is a poem written by Walt Whitman in 1865 that uses an extended metaphor to express grief over the death of U.S. president Abraham Lincoln. The poem was well received when it was published and marked Whitman's first work to be included in an anthology. It was also his most popular poem during his lifetime. Along with three other poems—"When Lilacs Last in the Dooryard Bloom'd," "Hush'd Be the Camps To-Day," and "This Dust Was Once the Man"—it forms a group of works by Whitman that deal with the death of Lincoln. (Summary adapted from Wikipedia, CC BY-SA 4.0.)