Four themes flow together at one of the most remarkable points in American history—the evening when Abraham Lincoln for the last time proclaimed a national day of thanksgiving. It was April 11, 1865: two days after the Civil War ended with Robert E. Lee’s surrender at Appomattox; four days before the president was murdered. Our national Thanksgiving Day is a good time to remember the president who had more to do with the institution of Thanksgiving and the actual practice of thanking God than any other, and to recall his last public speech.