Fonds consists of business records, correspondence, insurance and inspection records, promotional material, supply catalogues, and periodicals pertaining to Henry T. d'Entremont's business operations and investments. In addition, it contains correspondence and a postmaster's book from the Lower East Pubnico post office, and records from the Catholic Mutual Benefit Association and the Amiro Bros. & d'Entremont Fish Company. Also included are records of the Pubnico Fisherman's Bait Association and correspondence, invoices and inventory records pertaining to Marc E. LeBlanc's general store. It has not been established why these records were found amongst the d'Entremont papers. Records have been arranged chronologically. Periodicals and catalogues have been alphabetically arranged according to title of name of supplier. Ledger/books are located on storage shelves and loose records are contained in banker boxes.

Fonds consists of books of mail received and sent from the Kingston Post Office, and a record book of registered letters.

Fonds consists of correspondence, 10 ledgers, 11 day books, 2 scrapbooks of receipts and general ledgers for registered letters. The two ledgers have been used a scrapbooks for receipts, which have been pasted over most pages of the ledgers and one of the postal books. It is thought that Messrs. McLeod and McLean did this themselves.

Fonds consists of day books, which record the daily operations of the Meuse store and one book of postal office records. Many of the day books contain indexes.

Fonds consists of two books used to record mail received which indicate the other post offices from which the mail arrived, and one empty ledger for postage collected in cash.