Justin Butterfield (English Wikipedia)

Wilson, John M. (1880). Memoir of Justin Butterfield. Chicago: Chicago Legal News Company. Retrieved November 14, 2012.
Linder, Usher F. (1879). Reminiscences of the early bench and bar of Illinois. The Chicago Legal News Company. pp. 87–88. Justin Butterfield.

books.google.com (Global: 3^rd place; English: 3^rd place)

"Taking Back Our Land: A History of Land Grant Reform". landgrant.org. Archived from the original on September 26, 2013. Retrieved July 13, 2013.

This was part of a larger relocation of the cemetery (which was not completely successful, as many bodies were left in place) and which also included remains of 4,000 Confederate prisoners of war. However, all visible remnants of the cemetery were removed, excepting the Couch tomb, which is probably the oldest extant structure in the affected area of the City, everything else having been destroyed by the Great Chicago Fire. Bannos, Pamela (2012). "Hidden truths: Visualizing the City Cemetery". The Chicago Cemetery & Lincoln Park. Northwestern University. Retrieved November 15, 2012.. Bannos, Pamela (2012). "The Couch Tomb — Hidden truths: Visualizing the City Cemetery". The Chicago Cemetery & Lincoln Park. Northwestern University. Retrieved November 15, 2012. See Graceland Cemetery. See Chicago Water Tower, which has often been said to be the oldest structure in the area.
Bannos, Pamela (2012). "Cemetery Lot Owners — Hidden truths: Visualizing the City Cemetery". The Chicago Cemetery & Lincoln Park. Northwestern University. Retrieved November 15, 2012.

Thomas F. Schwartz (1986). "An Egregious Political Blunder: Justin Butterfield, Lincoln, and Illinois Whiggery". Journal of the Abraham Lincoln Association. 8 (1). Abraham Lincoln Association. Retrieved November 14, 2012.

"Taking Back Our Land: A History of Land Grant Reform". landgrant.org. Archived from the original on September 26, 2013. Retrieved July 13, 2013.