On April 11, 1865, President Abraham Lincoln delivered what would be his last speech from a window at the White House to the crowd below. They had gathered there expecting a celebratory speech on Confederate Gen. Robert E. Lee’s surrender to Ulysses S. Grant just two days earlier. On April 11, 1865, President Abraham Lincoln delivered what would be his last speech from a window at the White House to the crowd below. They had gathered there expecting a celebratory speech on Confederate Gen. Robert E. Lee’s surrender to Ulysses S. Grant just two days earlier.