Explore a gallery of images of Abraham Lincoln and his wife Mary Todd. Abraham Lincoln was the 16th President of the United States, the first president from the Republican Party, and the leader of the country during the American Civil War. Lincoln’s firm anti-slavery position led to his Emancipation Proclamation, which declared that slaves living in southern, rebel states were free. His oratorical and writing skills, and firm belief in preserving the future of the Union of the United States, appealed to the best of American ideals. Lincoln served as president from 1861-1865. He was assassinated by John Wilkes Booth in Ford’s Theatre in Washington DC on April 14, 1865.