Complex sentence: Another connection between Lincoln and John Hay came through Nicolay, who had moved to Springfield in 1856, printed campaign literature for Lincoln, and was admitted to the bar in 1859 after studying law under one of Lincoln's close friends, Ozias Hatch.
Split into simpler sentences: Another connection between Lincoln and John Hay came through Nicolay, who had moved to Springfield in 1856 where he printed campaign literature for Lincoln. He was admitted to the bar in 1859 after studying law under one of Lincoln's close friends, Ozias Hatch.