Union Cemetery is located in Patoka Township, Gibson County, Indiana. It is an inactive cemetery and was also known as the Baptist or Colored Cemetery. It is located about 1.5 miles east of Princeton, approximately 250 feet from an entrance off the southeast side of Lake Road, just east of the entrance to Camp Carson.

Gravestone	Name	Birth	Death	Unit / Comments
	William Butler			Company B, 54th Mass. Infantry
	Sgt. Benjamin May			Company D, 100th U.S. Colored Troops
	William Starling			Company B, 118th U.S. Colored Troops
	Sgt. John Piven			Company A, 14th U.S. Colored Troops
	Henry Williams			Company B, 6th U.S. Colored Heavy Artillery
	Corp. William Lewis			Company B, 28th U.S. Colored Troops
	Peter Jones			Company B, 118th U.S. Colored Troops
	Henry Walker			Company I, 55th Mass. Infantry. This photo was by Dan Elliot and retrieved online. As of 2015, there is no physical evidence that this stone remains.
	Cyrus Tucker			Company I, 118th Mass. Infantry. This photo was by Dan Elliot and retrieved online. As of 2015, there is no physical evidence that this stone remains.