The contents are as follows:

(i) A list, circa 1642, of the cannon belonging to the Marquess of Argyll (folio 2);

(ii) Business correspondence and papers, circa 1653-1669, of Sir James Lamont and Archibald Lamont of Stilaig, his brother, including some draft petitions of Sir James to the English commissioners in Scotland, claiming restitution for injuries inflicted on himself and his family by the Marquess of Argyll (folio 4);

(iii) Business correspondence and papers, 1669-1714, of Archibald Lamont of Lamont (died 1713) and Dugald Lamont of Lamont (formerly of Stilaig), including a list, 1705, of charters in the Register of Paisley concerning the kirklands of Kilfinan in the Lamont family estates (folio 38);

(iv) Memorials and queries, 1738-1741, for Archibald Lamont of Lamont (died 1767) (folio 64);

(v) Papers, 1782-1786, concerning tacks and obligations, mainly addressed to John Lamont of Lamont (died 1817) by his tenants (folio 77);

(vi) Legal papers, 1817-1834, concerning John Lamont of Lamont (died 1829), Norman Lamont of Monydrain, and Archibald James Lamont (folio 89);

(vii) Notes, 1891, on Ch.7565: Genealogical tree of the family of Lamont of Lamont (folio 154);

(viii) Draft inventory, 1893, of the titles of the estate of Lamont (folio 162).