While on the run after escaping the boarding school, Mary was almost caught when the newspaper run a story on her. Her father Klaus, eventually found her after Stanislas Sainclair ran a story on her in the Robertson Circus 2).
See also: Mondes (im)parfaits.
We know little about Trahmer where L'Echo des Cités started. The mentioned address (117, allée d'Orsenna) resembles a lot to the building of the former Socialist Press across the street of Centre belge de la bande dessinée (CBBD). During the first Obscure Convention a possible passage has been found.