Objects that are found in the Library are deposited at first at the General Information counter in the entrance-hall. Telephone (general information about the Bpi): +33 (0)1 44 78 12 75 (during the hours that the Library is open)
Later they are transferred to the Lost and Found Unit in the Pompidou Centre, located in the Forum (Level 0). Telephone (Pompidou Centre switchboard): +33 (0)1 44 78 12 33
Books that belong to other libraries are returned to the establishments that own them.