On June 1, 1865, Senator Charles Sumner referred to the most famous speech ever given by President Abraham Lincoln. In his eulogy on the slain president, he called the Gettysburg Address a "monumental act." He said Lincoln was mistaken that "the world will little note, nor long remember what we say here." Rather, the Bostonian remarked, "The world noted at once what he said, and will never cease to remember it. The battle itself was less important than the speech."

There are five known copies of the speech in Lincoln's handwriting, each with a slightly different text, and named for the people who first received them: Nicolay, Hay, Everett, Bancroft and Bliss. Two copies apparently were written before delivering the speech, one of which probably was the reading copy. The remaining ones were produced months later for soldier benefit events. Despite widely-circulated stories to the contrary, the president did not dash off a copy aboard a train to Gettysburg. Lincoln carefully prepared his major speeches in advance; his steady, even script in every manuscript is consistent with a firm writing surface, not the notoriously bumpy Civil War-era trains. Additional versions of the speech appeared in newspapers of the era, feeding modern-day confusion about the authoritative text.