The fourth stone was part of the foundation of the Vincennes Sun Newspaper in Vincennes, Indiana, where Lincoln first viewed a printing press. The Lincoln family stopped in Vincennes during their move to Illinois in early March 1830.

The plaque reads: This stone from the foundation of the Western Sun and General Advertisement, Vincennes, Indiana, where Abraham Lincoln, en route to Illinois from Indiana in march of 1830, first saw a printing press. Indiana Lincoln Union