The present maps were prepared by Pierre-Jérome Lartigue (1729-1772) who served as the King's Keeper of Stores until his removal from that office in 1752. The map of the fortress shows the positions of batteries of canon and mortar within and outside the fortress, described in detail in the key. The map of the province of Isle Royale, apart from the place names, offers two "remarques" on the native inhabitants
of the northern peninsula: "This part of the Isle is inhabited only by some savages, it is very wooded and filled with beautiful meadows" and again "The lines otherwise called roads highlighted in red designate the beaten paths (les chemins plaqué) of the Savages by which they travel in the Isle. This is only, properly speaking, paths traced where one man can barely pass."
The physical item is not available at the Boston Public Library.