6. Taken by Abraham M. Byers in Beardstown, IL on May 7, 1858. Lincoln was in Beardstown to defend Duff Armstrong, the son of his friend Jack Armstrong, who was accused of murder. The prosecution’s case rested on the testimony of an eyewitness, who claimed to have seen Armstrong commit the murder. Lincoln produced an almanac that showed that the murder was committed on a moonless night, and the witness couldn’t have seen what occurred. The jury promptly acquitted Armstrong of all charges.