Most of the letters and papers are of the 17th century, and deal with the garrisoning of Lochaber and district, the payment of the garrisons, the patrolling of unruly neighbourhoods, and similar measures for the establishment and maintenance of law and order. There are several instructions signed by the Marquess of Argyll, and letters from him, one of which contains the command to fire Lord Ogilvy's Castle of Forther, if necessary, with further orders as to the disposition of his goods and gear; also a letter of Sir David Leslie, a bond of friendship between the Campbells of Inverawe and the Macdonalds of Glencoe, and a letter of Major Duncan Campbell of Inverawe, hero of the Ticonderoga ghost-story.
At the end is an inventory with transcripts of a few of the documents made about 1830.
