The contents are as follows: Notebook, 1802, of John Rennie: River Witham at Lincoln, Foss navigation, Saxilby swing bridge (MS.19880);

Notebook, 1802, of John Rennie: Waterworks at Kidbrook for Charles Abbot MP, Dover town mill and harbour, Kent canal, Torksey lock, Lough Owel, Royal canal (MS.19881);

Notebook, 1802-1803, of John Rennie: London docks, sugar milling, Wolseley bridge, Stretton bridge, Radford bridge, Darlaston bridge, pile-driving engine at Wisbech, Handfordbridge, Conway crossing, Boston bridge, Fen drainage, Musselburgh bridge, Teviot bridge (MS.19882);  

Notebook, 1803, of John Rennie: London docks, Kennet and Avon canal, Portsmouth harbour, Chichester harbour, Dublin water supply (MS.19883);

Notebook, 1803, of John Rennie: Pile-driving machine at Woolwich, London docks, Thames and Medway canal, Royal canal, Bristol harbour (MS.19884);

Notebook, 1803, of John Rennie: Foss navigation, railways near Leeds, Lichfield water supply, mills at Islandbridge in Dublin, experiments at Limehouse rope-works, London docks (MS.19885);

Notebook, 1803, of John Rennie: Plymouth harbour, Kennet and Avon canal (MS.19886);

Notebook, 1803-1804, of John Rennie: Wisbech mill, Boston bridge, Dungeness light, seawall at Dymchurch, Croydon canal, London docks, Wandsworth mills (MS.19887);

Notebook, 1804, of John Rennie: Lea Bridge mills, Romney Marsh drainage and Royal Military canal, steam-engine for the Royal Mint, both in London and Birmingham, London docks, Claverton mill, Merton mill (MS.19888);

Notebook, 1804, of John Rennie: Chesterfield canal, Beverley drainage, Hull docks, Winteringham sea wall, Ancholme drainage (MS.19889);

Notebook, 1804, of John Rennie: Angles of windmill sails, London docks, Royal Military Canal, River Wey at New Haw, mills at Evesham, Pymore flax mill (MS.19890);

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).