The contents are as follows. (i) Archway Bridge at Highgate, correspondence, 1811-1812, 1817 (folio 1); (ii) Boston, draft report, estimate, and letter, 1800, 1811 (folio 31); (iii) Bridge of Earn, letters, 1820-1821, and plan, undated (folio 38); (iv) Carlisle, letter, 1812 (folio 43); (v) Chepstow, letters, 1811-1812 (folio 45); (vi) Conway and Menai, papers, reports, and correspondence relating to these bridges in particular, and to improvements to the road to Holyhead in general, 1783-1786, 1801-1814, 1810-1811 (folio 49);