Abraham Lincoln to Gustave P. Koerner, 15 July 1858 (Campaign Digital Edition)
Gustave P. Koerner to Abraham Lincoln, 17 July 1858 (Campaign Digital Edition)
William H. L. Wallace to Abraham Lincoln, 9 August 1858 (Campaign Digital Edition)
Thomas A. Marshall to Abraham Lincoln, 27 August [1858] (Campaign Digital Edition)
Thomas A. Marshall to Abraham Lincoln, 29 August [1858] (Campaign Digital Edition)
Gustave P. Koerner to Abraham Lincoln, 30 September 1858 (Campaign Digital Edition)