The contents are as follows. (i) MacKonochie's sawmill, correspondence, 1795-1796 (folio 1); (ii) Bombay harbour, report, 1796 (folio 26); (iii) Calcutta Mint, correspondence and estimates, 1821 (folio 30); (iv) Lucknow, correspondence, drawing, and report concerning an engine and a cast iron bridge for, 1812-1815, with a press photograph of the bridge, 1935 (folio 65).