A Bill Supplemental to the Charter of the Springfield and Alton Turnpike Road Company, [27 February 1841] (Legislative Digital Edition)

Abraham Lincoln to William Martin, 19 February 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 21 February 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 24 February 1851 (Campaign Digital Edition)

Abraham Lincoln to Isaac Gibson, 26 February 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 27 February 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 6 March 1851 (Campaign Digital Edition)

Isaac Gibson to Abraham Lincoln, 15 March 1851 (Campaign Digital Edition)

Isaac Gibson to Abraham Lincoln, 15 March 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 23 June 1851 (Campaign Digital Edition)

Abraham Lincoln to William Martin, 29 August 1851 (Campaign Digital Edition)

Abraham Lincoln to Robert M. Dunlap, 2 September 1851 (Campaign Digital Edition)

Bill Introduced in Illinois Legislature to Incorporate the Vermillion Coal and Manufacturing Company, [30 January - 4 February 1853] (Campaign Digital Edition)

Abraham Lincoln to John A. Rockwell, 15 February 1853 (Campaign Digital Edition)

Robert Smith to John T. Stuart, Abraham Lincoln, and Benjamin S. Edwards, 24 February 1854 (Campaign Digital Edition)

John T. Stuart, Abraham Lincoln, and Benjamin S. Edwards to Robert Smith, 1 March 1854 (Campaign Digital Edition)

Abraham Lincoln to Samuel Briggs, 29 September 1857 (Campaign Digital Edition)

Abraham Lincoln to Henry E. Dummer, 7 February 1858 (Campaign Digital Edition)