Sources de Fontenay’s latest research: - An attempt to position the old wells on the city plan, - Le lavoir du Clos de Chevillons. - The anti-aircraft shelters. - The grounds of the former Ecole Normale Supérieure adjacent to the Coulée Verte, and a reminder of previous research - The draining galleries of Colbert. - Interventions on the sites at Meudon and Nanterre.