For 10 points, name this literary character who is the implied subject of the Walt Whitman poem "O Captain, My Captain!," the sixteenth President of the United States.
In one play featuring this character, he is first seen naming the "Five Moods" under the tutelage of Mentor Graham. In a poem about this character, "the sins of all the war-lords" burn his heart. He was the subject of a Richard Hofstadter essay that described the "self-made myth." This subject of a play by Robert Sherwood and a poem by Vachel Lindsay that sees him "walk at midnight," was also the subject of a six-volume biography covering his "Prairie Years" and his "War Years" by Carl Sandburg. For 10 points, name this literary character who is the implied subject of the Walt Whitman poem "O Captain, My Captain!," the sixteenth President of the United States.
In one play featuring this character, he is first seen naming the "Five Moods" under the tutelage of Mentor Graham.
Abraham {Lincoln}