What is a sustainable heritage? How best to preserve what exists and how to find the trace of what did not last? Three mini-conferences over the weekend will discuss these issues from various case studies. From decorative feathers to the vanished buildings on Rue Vivienne, historians and historians of art and architecture will show how their research is sustaining a heritage that does not always stand the test of time.

• Feather loom in the 16th century: making people talk about lost objects
  The feathers of birds were, at the dawn of modern times, a raw material both abundant and sought after by European artists and craftsmen. Harvested from the four corners of the globe, then transported to the courtyards and urban centres, they were then transformed by the plumassiers into sumptuous headgear, costume elements or ephemeral scenery. Of this production, almost nothing has happened to us. Why go in search of such a material, perishable by nature, and by what means? How do these "ghost works" contribute to writing art history today?
• The factory of a Parisian district: materializing the lost heritage of the Richelieu sector
  In the 19th century, the city was in the throes of many metamorphoses. In addition to the urban and architectural transformations associated with the modernization of society or techniques, there is the renewal of commercial activities. Capturing the highlights of these developments helps to better define what constitutes a Parisian district. Theatres, restaurants, homes, novelty shops, or urban furniture, now extinct, can be restored thanks to an abundant iconography that illustrates the passage from the old city to the modern city.
• The red shirt. Ethics of recovery in the work of Babi Badalov
  For his paintings, drawings and collages, the artist Babi Badalov produces nothing. Instead of new, he uses old, second-hand materials. This ecological concern responds to an economic imperative and to years of exile and precariousness but also to a history that is hidden in the words and fabrics visible in the exhibition «Lost in languages» (INHA, Galerie Colbert and Hall Rose Valland). The story of a red shirt.
  Practical information
  Saturday, September 17
  3 pm - 3.30 pm: Plumasserie in the fifteenth century: making people talk about missing objects by Marie Colas des Francs (INHA)
  17:00 - 17:30: The factory of a Parisian district: materializing the lost heritage of the Richelieu sector by Charlotte Duvette (INHA)
  Sunday, September 18
  12:00 - 12:30: Babi Badalov, the red jacket by Lou-Justin Tailhades (Sorbonne University)
  6 rue des Petits Champs 75002 Paris
  Colbert Gallery
  Free entry
  All the information is to be found on the agenda of the INHA: www.inha.fr