The contents are as follows: Papers, 1795-1821, 1935, of John Rennie concerning overseas operations in India (MS.19821);

Papers, 1805-1821, of John Rennie concerning various overseas operations (MS.19822);

Notebook, [1816-1818], of John Rennie containing notes apparently for a corn-mill at Nantes (MS.19823).

The contents are as follows: Correspondence, 1788-1821, between John Rennie and Messrs Boulton and Watt (MS.19824);

Papers, 1778-1811, of John Rennie concerning steam engines (MS.19825);

Papers, 1804-1821, of John Rennie concerning smaller works (MS.19826).

The contents are as follows: Papers, 1785-1821, undated, of John Rennie concerning various bridges in places beginning A-Co (MS.19771);

Papers, 1768-early 20th century, of John Rennie concerning various bridges in places beginning Cr-W (MS.19772);

Notebook, 1810, of John Rennie giving quantities and quality of stone required for Vauxhall bridge (MS.19773).

The contents are as follows: Correspondence, 1800-1821, of John Rennie concerning Fen drainage (MS.19786);

Papers, 1768-1821, of John Rennie concerning Fen drainage (MS.19787).

The contents are as follows: Papers, 1770-1821, of John Rennie concerning harbours in Aberdeen, Ardglass and Ardrossan, including the Paisley and Ardrossan Canal (MS.19788);

Papers, 1771-1821, of John Rennie concerning harbours in places beginning Ay-Br (MS.19789).

The contents are as follows: Papers, 1771-1821, of John Rennie concerning harbours in places beginning Br-Du (MS.19790);

Correspondence, 1801, 1808, 1811, 1815-1818, of John Rennie concerning Dunleary harbour (MS.19791).

The contents are as follows: Correspondence, 1818-1820, reports, plans, and other papers, 1813-1818, 1821, of John Rennie concerning Dunleary harbour (MS.19792);

Notebook, 1801, of John Rennie concerning Dunleary harbour (MS.19793);

Papers, 1796-1821, of John Rennie concerning harbours in places beginning Dy-H (MS.19794).

The contents are as follows: Papers, 1794-1821, of John Rennie concerning harbours in places beginning with L-Pe (MS.19795);

Notebook, 1796, of John Rennie of observations made at various parts of London docks (MS.19796);

Notebook, 1807-1809, of John Rennie concerning Perth harbour and mills (MS.19797);

Correspondence, 1805-1808, 1811, of John Rennie concerning Plymouth harbour (MS.19798).

The contents are as follows: Correspondence, 1812-1817, 1820-1821, of John Rennie concerning Plymouth harbour (MS.19799);

Reports, estimates, and plans, 1806, 1811-1812, 1820, of John Rennie concerning Plymouth harbour (MS.19800);

Notebooks, 1806, 1812, of John Rennie of observations made at Plymouth harbour (MS.19801-19802);

Papers, 1782-1821, of John Rennie concerning harbours in places beginning with Po-Se (MS.19803).

The contents are as follows: Papers, 1805-1821, of John Rennie concerning harbours in places beginning with Sh-Y (MS.19804);

Notebook, 1793, containing a description by John Baine of Loch Broom and Ullapool as a harbour (MS.19805);

Papers, 1798-1821, of John Rennie concerning lighthouses (MS.19806).

The contents are as follows: Miscellaneous prospectuses, accounts, memoranda, booklists, and business papers, 1787-1821, of and concerning John Rennie, including those relating to the winding up of Rennie's affairs at his death (MS.19930);

Inventory, 1821, of plenishing (excluding books) of John Rennie's house in Stamford Street. (MS.19931);

Letters, 1779-1821, chiefly to and of John Rennie (MS.19932).

The contents are as follows: Letters, 1809-1820, of and concerning Lieutenant William Rennie, Royal Navy, to his father John Rennie (MS.19933);

Miscellaneous material, [1784]-early 20th century, relating to the life and career of John Rennie (MS.19934);

Facsimile, 1893, of the minute book, 1771-1792, of the Society of Civil Engineers. (MS.19935).

The contents are as follows: Correspondence and papers of the Rennie family (MS.19938).

The contents are as follows: Journal, 1838-1839, of Sir John Rennie (MS.19942);

Business papers, 1832-1841, of Sir John Rennie (MS.19943);

General correspondence, 1811-1864, chiefly of Sir John Rennie (MS.19944).