The contents are as follows: Papers, 1786-1821, of John Rennie concerning mills (MS.19807);

Invoice book, 1784-1786, of John Rennie concerning Albion Mill (MS.19808);

Notebook, 1787, of John Rennie of patterns sent to Birkberk and Ball's Iron Foundry (MS.19809);

Notebook, 1787, of John Rennie containing detailed description of second engine for Albion Mill (MS.19810);

Notebook, 1794, of John Rennie of prices of millwork (MS.19811);

Lists, 1791-1815, of mill machinery manufactured by the Rennies. (MS.19812);

Lists, 1815-1861, of mill machinery manufactured by the Rennies (MS.19813);

Notebook, 1808, of John Rennie concerning mills at the Dean Village (MS.19814);

Notebook, 1796, of John Rennie of alterations for Barclay and Perkins Brewery (MS.19815);

Papers, 1787-1831, of John Rennie relating to various mills (MS.19816).