Certificate of Survey for William G. Cantrall, 5 September 1834 (Legislative Digital Edition)
Survey of Section 16 in Township 17 North, Range 6 West, 10 May 1836 (Legislative Digital Edition)
Abraham Lincoln to School Commissioner, 22 August 1836 (Legislative Digital Edition)
Certificate of Survey for Alvin Ringo, 16 November 1836 (Legislative Digital Edition)
Certificate of Survey for Alvin Ringo, 16 November 1836 (Legislative Digital Edition)
Certificate of Survey for Alvin Ringo, 17 November [1836] (Legislative Digital Edition)
Notes of a Survey Made for David Hart, 1836 (Legislative Digital Edition)