By Alain Croix, historian, and Frank Renaud, director of the magazine Place publique Draughtsman, painter, poster artist, activist, Jules Grandjouan had devoted two works to his hometown, Nantes la grise (1899) and Nantes la grise: its twenty-eight bridges (1923). The project of a third volume, of which only a few plates have been published, is preserved in the heritage collections of the municipal library. Historian Alain Croix has taken advantage of this by contextualizing and commenting on plates and texts, a work published in the journal Place publique, which he presents on the occasion of the JEP.