File 20 January 1911-[22 January 1911] Box 2, Folder 10 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 22 January 1911-[25 January 1911] Box 2, Folder 11 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 25 January 1911-29 January 1911 Box 2, Folder 12 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 30 January 1911-2 February 1911 Box 2, Folder 13 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 3 February 1911-7 February 1911 Box 2, Folder 14 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 19 March-28 March 1911 Box 2, Folder 15 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 28 March 1911-3 April 1911 Box 2, Folder 16 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 3 April 1911-5 April 1911 Box 2, Folder 17 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 11 April 1911-19 April 1911 Box 3, Folder 1 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence
File 20 April 1911-25 April 1911 Box 3, Folder 2 In: Langstroth family papers, 1778-1955 (majority within 1831-1911) » Correspondence