The contents are as follows. (i) Letter of John Smeaton to William Hall of Whitehall concerning Eyemouth harbour, 1769 (folio 1); (ii) Letters, 1787-1874, undated, and other papers, 1768-1853, undated, addressed to the Stevenson family on engineering matters (folio 3); (iii) Two letters of Robert Stevenson, 1808, from the Bell Rock Light; a certificate signed by Stevenson with an accompanying medallion giving George Milne, a seaman in the service of the Northern Lighthouse Commissioners, immunity from impressment, 1809; and letters of and to Stevenson concerning the impact of waves on vertical surfaces (folio 190); (iv) Letters to Robert Stevenson from Sir Walter Scott, circa 1820, I K Brunei, 1834, and Viscount Palmerston, 1835, the last of these relating to proposed improvements to the harbour at Mullaghmore, in Sligo (folio 192).