This ambrotype of future president Abraham Lincoln was taken by photographer William Painter Pearson on August 26, 1858. An ambrotype was a successor to the daguerrotype that was easier and cheaper to produce. This image was taken during the seven debates the future president had with Stephen Douglas in 1858, when both were running for senator. Lincoln became president on March 4, 1861 and had served in the House of Representatives earlier in his life.