The preserved collections come from various organisations: "traditional" banks (Société Générale), regionally oriented banks (Société centrale de banque, Credit foncier d'Algérie et de Tunisie, Banque de Salonique, Crédit du Nord and Sogénal); former investment banks (Banque Mirabaud) and former merchant banks (Banque de l'Union parisienne). Their contents cover a variety of different themes: documents relative to the creation of these companies, their capital structure, the composition and functions of their boards of directors and general meetings; documents from their personnel departments and their finance departments.