The contents are as follows: Notebook, 1808, of John Rennie: Soundings at Woolwich dock, experiments on a Woolf steam-engine at Meux's brewery, Fen drainage, Albury Park papermill (MS.19891);

Notebook, 1808, of John Rennie: Cranes for London docks, springs at Woolwich, Fen drainage, Margate harbour, London and Portsmouth canal (MS.19892);

Notebook, 1808, of John Rennie: Experiments in cutting copper bolts at Sheerness, undermining of the cliff at Reculver, Sheerness harbour, Portsmouth harbour, Manchester waterworks, Glasgow waterworks at Anderston (MS.19893);

Notebook, 1808, of John Rennie: Harbours at North Sunderland, Burntisland, Methil, Leven, and Anstruther, supply of stone in Fife, Dempster's patent canvas. Burn’s flaxmill at Dundee, Bell Rock light, Perth mills (MS.19894);

Notebook, 1808-1809, of John Rennie: Larne canal, North fleet cement mill, Ardglass harbour, wells at Ramsgate (MS.19895);

Notebook, 1809, of John Rennie: Great Ouse bridges and sluices, Bedford river, Fen drainage, River Nene, mines at Beswick, Liverpool harbour, Kelso bridge (MS.19896);

Notebook. 1809, of John Rennie: Deptford waterworks, bridges over Gunter's Ditch at Reading, tunnel at the Royal Mint, Devizes railway, Newport harbour (MS.19897);

Notebook, 1811, of John Rennie: Ramhurst powdermill, Grand Western canal, Gloucester and Berkeley canal, London bridge, Southwark bridge, Liverpool docks, mills at Colnbrook (MS.19898);

Notebook, 1813, of John Rennie: Approaches to Waterloo bridge, Fen drainage, Enfield lock, Doncaster water-works, Tyne estuary at South Shields, dredging machine on River Witham, piles at Chetney Hill in Margate, Endsleigh bridge, Pembroke dock (MS.19899);

Notebook, 1815-1816, of John Rennie: Dublin harbour, Waterloo bridge, conversation with Nash concerning the Highgate Archway and the possible construction of a triumphal arch on Waterloo bridge, Leeds and Liverpool canal (MS.19900);

Notebook, 1818, of John Rennie: River Cam from Cambridge to Clayhithe, especially the bridges at Cambridge. (MS.19901);

Notebook, 1818, of John Rennie: Aberdeen harbour, Ythan estuary, Bridge of Don, Arbroath canal, Isleworth mill, Deeping fen drainage, Yarmouth harbour, Severn at Tewkesbury, Knottingley and Goole canal, Selby canal (MS.19902);

Notebook, 1786, of John Rennie: Diggin's mill at Chichester (MS.19903);

Notebook, 1786, of John Rennie: S D Liptrap and Company’s distillery, London (MS.19904);

Notebook, 1786, of John Rennie: Bell, Gosse and Company’s distillery, London (MS.19905);

Notebook, 1786, of John Rennie: Silas Deane's snuff and tobacco mill (MS.19906);

Notebook, 1787, of John Rennie: James Haig's distillery, Canonmills (MS.19907);

Notebook, 1787, of John Rennie: Aitchison and Brown's distillery, St Clements Wells (MS.19908);

Notebook, 1787, of John Rennie: J T Rutt's drug grinding mill. (MS.19909);

Notebook, 1787, of John Rennie: Henry Goodwyn's brewery, London (MS.19910).