Documents (3) which include Charles Le Moyne de Longueuil's marriage contract and a grant by him to Paul-Joseph LeMoyne, le Chevalier de Longueuil, of an arrière-fief in the Barony of Longueuil

Papers (12) which include; the creation of a rente viagère; the genealogy of the Lefebvre de Bellefeuille family; and correspondence with J. Schiefflin (plantation at Cayenne), Janvier Leclerc (non-payment of lods et ventes), J.O. Plessis and L.C. Duvert (dispute over seigneurial pew), and Mme. du Serre (widow of Hertel de Cournoyer), her daughter and Thavenet, a priest (concerning claims by these two women on Seigneurie of Cournoyer).

Letters (13) to newspapers concerning both local and provincial politics, largely involving his own activities. Some of these letters were published (eg. see Le Spectateur, Canadien, 9 January 1819 and L'Ami du Peuple, de l'ordre et des lois, 29 May 1833 and 7 May 1834).

Papers (7) which include letters form J.-B. Laviolette and J. Labrie on the death of Angéliqne Marguerite Lefebvre de Bellefeuille and copies of letters to J.R. Rolland (on claim by Mme. du Serre) and J.B. Laviolette (dispute concerning mills), as well as an obligation and an acte de vente.

Personal accounts (10 documents)

Various undated papers (11), including: lists of Lefebvre de Bellefeuille's papers and of the owners of Cournoyer; notes on cens et rentes; a genealogy of Hertel de Cournoyer family; and elegy to J. MacKay; a rough draught of a section of Bouchette (Top. Dict.,1832), describing the Seigneuries of Du Chêne, Blainville, and Continuation des Mille-Isles (written, in French, by E.A.L. de Bellefeuille); and, pro-government resolutions passed at a local meeting, with signatures (ca.1834-5).

Letters (11) from Charles-Louis Lefebvre de Bellefeuille, J. Comte, J.R. Rolland, D. Ducharme, C.P. Hervieux, P. Archambault, J.Paquin, F. Turcotte, McGillis and Quiblier concerning the sickness and death of Louise-Angéliqne Lambert Dumont, the widow of Antoine L. de Bellefeuille and from Adelaïde de Salaberry, concerning the death of her father, as well as the burial certificate of Eustache Antoine Lefebvre de Bellefeuille.

Papers (16) of François Lefebvre de (or "dit" Bellefeuille), including a certificate of baptism, two receipts, a promissory note, on acte de donation concerning the Seigneurie of Pabas and a ratification of sale. Also present are letters from Jean Lanne (a merchant of Bayonne), René Berrey, Antoine Pascaud (a colonial merchant, married Elisabeth Hertel de Cournayer) Georges Lefebvre de Bellefeuille, Genevieve Lefebvre d'Angeac & Charles-Gabriel-Sébastien de l'Espérauce, all concerned with either trade or family news, as well as a letter from Antoine Lefebvre de Bellefeuille concerning his captivity during the American Revolution.

Papers (8) which include: an account of masses to perform and the certificate of baptism of Louis-Charles; a letter from Louis-Charles to Joseph concerning the administration of their seigneurie; and letter to Angélique-Marguerite from her brothers François-Louis, Henri-Nicolas and Louis-Charles, as well as from Louise-Josephte Chartier de Lotbinière.

Correspondence (8) from Elmire D. Laviolette, Mary McGillis (her sister), William Macdonald and Eustache Antoine Lefebvre de Bellefeuille, mostly concerning family news, but also to do with Lefebvre de Bellefeuille's financial troubles (including one letter written by de Bellefeuille while in hiding). Also present here is a letter from E.A.L. de Bellefeuille to Margaret's father, Hugh McGillis, also written while escaping arrest.