he left to the city of sens some of the articles which he had preserved in memory of his emperor : two volumes of fleury de chaboulon with notes in napoleon 's handwriting ; two atlases in which napoleon had made some notations in pencil ; the folio volume of the campaigns of italy ; a copy of the merovingian kingdoms 450- 751 a.d. ; personal relics ; a coat with epaulettes ; a cockade from a hat ; a piece of the st. helena coffin ; and a bit of one of the willows which grew over the emperor 's tomb .