The correspondence dates largely from the 1840s, with a few earlier and later letters, including two of 1934 which refer to manuscripts which had strayed from the Chalmers papers. The miscellaneous papers include: 'Genealogical collections relative to the family of Chalmers collected by Alexander Deuchar, Genealogist, Edinburgh' (folio 87); 'Memoranda relative to the notices of families of the name of Chalmers' compiled by John Stuart, 1846 (folio 99); notes on the family by Patrick Chalmers the antiquary; genealogies compiled by Stuart (folio 115); and notes on the family of Chalmers of Balnacraig by Patrick Chalmers, William Fraser and John Stuart (folios 156-207).