File contains a letter addressed to John Mackenzie from William Wentzel. Wentzel gives news of business at Fort William, of traders both present and away, and of friends. He ends off by apologizing for not for not having visited Mr. and Mrs. Mackenzie at Terrebonne when he was in Montreal.

File contains manuscript (incomplete) by Captain George Vancouver, with correspondence from Henri Masson. The manuscript is titled, "Abridgement of part of a Voyage of Discovery round the World by Captain Vancouver Performed in the years 1790, 1791, 1792, 1793, & 1794 by order of his Majesty Regarding the North West Coast of America." Apparently copied by Duncan McGillivray, whose initials appear at the bottom of the Memorandum (page 2). This document is comprised of extracts of the original work titled, "A voyage of discovery to the North Pacific Ocean and round the world," published in 1798.

File consists of documents and a letter concerning support for the union of Upper and Lower Canada. Included are: a draft of a letter from the Seigneuries of Terrebonne, Mille Isles, Argenteuil and the Township of Chatham, to the committee in Montreal regarding pre-union petition; a copy of the petition in favor of the union of the provinces, from the counties of Effingham, York, Chatham and Argenteuil (this possibly accompanied the above described letter); a letter from G(eorge) Moffatt to unknown recipient giving his opinion on the wording of the petition; a draft of a section of the petition; another draft of the petition, from the county of Effingham (probably incomplete); and a printed document titled, "A Bill for Re-uniting the Provinces of Upper and Lower Canada, and for the Government of the United Province. Ordered by the House of Commons."

File includes a letter from Isaac Todd to Mackenzie, Oldham & Co. Todd relays the request from Mr. Morrogh to send a bill for a shipment received in June of 500 barrels.

File includes a letter addressed to Mackenzie, Oldham & Co. Letter concerns a shipment of flour being unloaded from the Desire which was smaller than originally requested. Asks if the 400 barrels for the N.E. Department are ready.

File includes a memorandum on the Seigneury of Terrebonne, with a letter and four letter transcripts addressed to Roderick Mackenzie. The memorandum reads: "Memorandum respecting the Seigniory of Terrebonne informing proprietors to apply to Mr. Plante to determine the amount of taxes owed on the third concession of the Seigniory, noting that the amount due should be increased from what was previously paid by Mr. Jordan." Also included is a letter concerning the sale of the seigneury of Terrebonne to Mackenzie and later annulment and 4 transcripts of letters from Reid to Mackenzie regarding the seigneury of Terrebonne dating from 12 August 12 1816 to 19 February 19 1819.

File includes accounts and documents relating to the ship Rachel. Included are four accounts showing wages paid to four different sailors, including a first mate and master, on board the Rachel, 1810-1811; a 6-page account showing purchases made for the Rachel between January 1811 and September 17, 1812; a document listing the inventory on the Rachel with assigned values (items belonging to the ship, not cargo, 1810-1811) ; a document titled, "A List of Seamen's Wages on Board Brig Rachel," 1811-1813; and an Account of the Rachel for goods purchased from John Dunscomb & Co., 1812-1813.

File includes a letter addressed to Mackenzie, Oldham & Co. from Parker, Gerrard, Ogilvy & Co., ordering three to four hundred quintals of biscuit to be delivered at the End of the Island.

File includes a copy of the Last Will and Testament of Peter Pangman and a letter of award in his favour. Copy of the Last Will and Testament of Peter Pangman originally recorded on November 1, 1815. This copy was made September 27, 1845. Also includes one document containing the arbitrators ruling in a disagreement between Pangman and Henry McKenzie, executor of the Estate of Simon McTavish, over the value of trees cut on Pangman's land in the Seigneury of Lachenaie and damage done to the undergrowth by workers.

File includes 2 letters addressed to Jacob Oldham and Messrs. Mackenzie, Oldham & Co. from Pangman at his manor Grace Hall in Mascouche. In the letter dated 1804, Pangman orders goods from Oldham (green rave, bread and veal) and asks to have the amount put on his account. In the second letter, he denies accusations of "dispersions" and disrespects made by an unidentified individual as reported to him in a letter from Mackenzie, Oldham & Co. and briefly mentions losing an amount of money and wanting to deliberate on whether to pay another sum.