File 10 February 1855-10 September 1855 Box 1, Folder 7 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 19 September 1855-1 September 1857 Box 1, Folder 8 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 12 October 1857-3 July 1858 Box 1, Folder 9 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 15 July 1858-21 September 1858 Box 1, Folder 10 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 22 September 1858-Undated 1858 Box 1, Folder 11 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File Undated 1858-6 April 1859 Box 1, Folder 12 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 21 April 1859-28 February 1860 Box 1, Folder 13 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 8 March 1860-17 September 1860 Box 1, Folder 14 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 22 September 1860-11 December 1860 Box 1, Folder 15 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 19 December 1860-21 March 1861 Box 1, Folder 16 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence