Carte de visite of Jacob Dolson Cox, who served with the Union Army during the Civil War. Originally from Montreal, Canada, Cox emigrated to the United States, and attended Oberlin College. After several pre-war political positions in Ohio, he joined the Ohio Volunteer Infantry. Cox fought at Antietam, South Mountain, and Atlanta, and eventually became military supervisor for the District of Ohio and the District of Michigan. He went on to become the 28th Governor of Ohio