Letters filed in envelopes or packets, each with a list by Sedgwick, sometimes written on the outside of the envelope. They were arranged chronologically, each envelope covering anything from two to eighteen months. They were labelled A-Z and AA-II, but unfortunately not in chronological order. They have now (1997) been boxed in catalogue order, for ease of finding. The second list below gives the chronological order of the packets: 1850 Jun-Dec) 1851 Jan-Dec) II Q 1852 Jan-Dec) 1853 Jan-Jul) 1854 May-Aug) II X 1853 Sep-Dec) 1854 Jan-Apr) II M 1854 Oct-Dec) 1855 Jan-Dec) II L 1855 Nov-Dec) 1856 Jan-Apr) II A 1856 Mar-Jul II I 1856 May-Dec II CC 1856 Nov Dec) 1857 Jan-Apr) II C 1857 Jun-Nov II J 1857 Nov-Dec II K 1858 Jan-Jul, Oct-Dec II G 1858 Aug-Sep II H 1859 Jan-Apr II P 1859 Apr-Jun II B 1859 Aug-Sep II U 1859 Apr ) 1860 May-Aug) II II 1861 Apr-Nov II S 1861 Jul-Dec) 1862 Jan-Jun) II R 1862 Feb-Mar II V 1862 Apr-Dec) 1863 Jan-Mar) II D 1863 Feb-Dec II T 1863 Sep-Dec) 1864 Jan-Jun) II E 1864 Apr-Dec) 1865 Jan-Dec) II Y 1866 Jan-Dec) 1867 Jan-May) II EE 1867 May-Oct II BB 1868 Apr-Dec) 1869 Jan-May) II Z 1869 Jan-Nov II AA 1870 Jan-May II W 1870 Jun-Dec II N 1871 Jan-Dec) 1872 Jan-Dec) II HH