The contents are as follows: Correspondence, 1839-May 1855, of Thomas Carlyle and Joseph Neuberg, and various other correspondents (MS.551);

Correspondence, June 1855-March 1859, of Thomas Carlyle and Joseph Neuberg, including letters of various other correspondents, and proof sheets of 'Frederick the Great' by Carlyle (MS.552);

Correspondence, April 1859-1867, of Thomas Carlyle and Joseph Neuberg, including letters of various other correspondents, and proof sheets of 'Frederick the Great' Carlyle (MS.553).