Guide général du Musée national de Naples : suivant la nouvel arrangement : avec plan du musée
A guidebook to the National Museum in Naples, compiled by Domenico Monaco and published in Naples by Vincenzo Morano in 1874 for visitors to the museum's reorganised collections. Its two pictures are floor plans printed in black and red, one labelled Rez-de-chaussée and one Étage supérieur, with room names set in red capitals across the layout. A designer could take from them a clear model for dense architectural diagrams, with colour-coded labels and wayfinding systems.
