O Captain! My Captain!
... that although "O Captain! My Captain!", written on the death of Abraham Lincoln, was one of Walt Whitman's most popular poems, he grew to be "almost sorry" he wrote it?
... that although "<b id="mwKg"><a href="./O_Captain!_My_Captain!" id="mwKw" rel="mw:WikiLink" title="O Captain! My Captain!">O Captain! My Captain!</a></b>", written on the death of <a href="./Abraham_Lincoln" id="mwLA" rel="mw:WikiLink" title="Abraham Lincoln">Abraham Lincoln</a>, was one of <a href="./Walt_Whitman" id="mwLQ" rel="mw:WikiLink" title="Walt Whitman">Walt Whitman</a>'s most popular poems, he grew to be "almost sorry" he wrote it?