Benjamin Kellogg Jr. to Abraham Lincoln, 4 April 1848 (Congressional Digital Edition)
Abraham Lincoln to Jesse Lynch, 10 April 1848 (Congressional Digital Edition)
Abraham Lincoln to Benjamin Kellogg Jr., 21 April 1848 (Congressional Digital Edition)
John Bennett to Abraham Lincoln, 27 February 1849 (Congressional Digital Edition)
Zenas C. Robbins to Abraham Lincoln, 13 April 1849 (Campaign Digital Edition)