Includes one letter (in French) to the Hon. Roderick Mackenzie from his son, Roderick-Charles. Letter discusses Mr. Gibbs' loss (a fire burned down his premises), arson in New York and the southern cities in the Union, and provides interesting commentary on social life in Montreal.

File includes twelve documents plus bill of lading to Mackenzie, Oldham & Co. These business letters discuss importing and exporting of read, flour, molasses, sugar, rum, beef, etc., and trade with the West Indies. There is some mention of the conflict between Canada and the U.S. and how it affected business.

File include a copy of a letter from McTavish, Frobisher & Co. to Alexander Fraser of the North West Company. Letter regarding the posts below Quebec lately added to the Company; intended adventure of Capt. Richards to Hudson's Bay; Angus Shaw's appointment be sufficient had he only the King's posts; Mr. Grant refuses to give up the lease at Mingan; insisting that Alex. Fraser maintain the King's posts one more year before returning to the North West; Angus Shaw to go across the country by Lac Mistassini & meet the vessel at Hudson's Bay & Co.

Includes four letters sent to Mackenzie, Oldham & Co. The first letter requests that the Quebec merchants Burns & Woolsey hire a vessel for trade with Newfoundland. The second mentions waiting for the boat and articles paid by Caldwell, Fraser & Co. The third relates to the proper form of the certificates for half the pay of Capt. Osborne and Lieut. Fraser. The fourth relates to the contract for flour and mentions John Well(e)s who has just arrived with information that the Treaty of Trade & Commerce between Great Britain and the United States had been signed in London on Dec. 31st.

Includes two letters sent to Mackenzie, Oldham & Co. The first letter mentions getting 500 barrels of flour for Angus Shaw's posts and 100 barrels for themselves and discusses the possible hiring or purchase of the Desire (N.W. & Co. ship) by Mackenzie, Oldham & Co. The second letter mentions that Mr. Shaw wants to know whether they will be needing one of the vessels belonging to the King's Posts to bring down the flour.

Includes two letters sent to Mackenzie, Oldham & Co. Items concerning the purchase of flour from Mackenzie, Oldham & Co., delivered to the End of the Island. One item is an agreement that McTavish, McGillivrays & Co. will purchase 2000 barrels at $8 per barrel, and the other is an account stating that they purchased 400 barrels.

Contains draft letters and kept copies regarding a series of court rulings between Roderick Mackenzie and a committee of creditors. File includes: draft of lettersent to Mr. John Reeves with copies to J. R. Rolland and Wm. Walker from Roderick Mackenzie; two drafts of letters to J. R. Rolland and William Walker from Roderick Mackenzie on business concerns; kept copy of a circular letter from the trustees of the estate; an unsigned draft of a letter sent by Roderick Mackenzie in answer to the circular; an unsigned and undated document titled "Abstract of the Instrument sent out from London to be signed by the creditors of McTavish MGy & Co. McGillivrays Thain & Co. the late Wm. McGillivray & Simon McGillivray."

Includes three letters addressed to Lieut-Col. Roderick Mackenzie and one letter to addressed to Joseph Masson. The three letters to Roderick Mackenzie are from J.M. Mondelet. The first letter includes Mondelet's regrets at not having been able to give the carrier the Mackenzie's estimated amount. The second letter mentions the Deputy Pay Master of the militia had not yet arrived but a letter received from Mr. Ryland contained the warrant signed by Sir George Prevost and had been shown by Mondelet to McKenzie's sergeant. The third letter mentions Mondelet has paid the amount at the Office of the North West Co. and will pay the officers as soon as the money is received. The letter to Joseph Masson is also from J. M. Mondelet. The letter mentions E. Prevost's creditors, several of whom did not attend a meeting, which was consequently adjourned to the following day.

Consists of a statement from the Keerper of the Common Gaol of Montreal presented to the Grand Jury of the Court of Oyer & Terminer for the District of Montreal, 1821. The statement declares that the prison under itscurrent configuration is inadequate for the increasing number of prisoners that have been lodged therein rendering it almost impossible to separate different classes of prisoners. The Keeper, Peter Holt, requests that the lower part of the prison ought to be restored to its original use and reunited to the Common Gaol to create more space for prisoners.

File includes two letters addressed to Henry McKenzie from D. Ogden. The first letter refers to a letter on the subject of the Frobisher Estate and says that McKenzie may forward it to Ben Frobisher. In the second letter, Ogden gives his opinion on the matter of McKenzie's purchase of McKay's house in Terrebonne.