Railroad Pass for Abraham Lincoln, 31 December 1857 (Campaign Digital Edition)
Newton D. Strong to Abraham Lincoln, 5 February 1858 (Campaign Digital Edition)
Irvin Camp to Abraham Lincoln, 6 February 1858 (Campaign Digital Edition)
Abraham Lincoln to Henry E. Dummer, 7 February 1858 (Campaign Digital Edition)
Lorenzo P. Sanger to Abraham Lincoln, 12 June 1858 (Campaign Digital Edition)