How do I find an old title deed?

The deed to my father's house is at least 35 years old. My father's state of health prevents him from looking after his own affairs, which has led the public prosecutor to place him under guardianship. His condition requires that he be placed in a specialized institution. As the cost of a day's care was very high, the guardianship office suggested that I sell his house to meet the expenses, and to do so asked me for the name and address of the notary who had registered the purchase of his house and drawn up the deeds. Despite my research, I haven't found a trace of these documents. How can I proceed?

Me Nathalie Couzigou-Suhas, notary, answers your questions on the BFM Business program "Le Club du Droit / Passez-moi le notaire".