Differents camps de l’armée de York-town à Boston (Various encampments of the army from Yorktown to Boston) is a manuscript map, in pen-and-ink and watercolor. It was created in 1787 by French cartographer François Soulés (1748–1809), based on an earlier version from 1782. The map is oriented with north toward the upper right. It shows the route marched during the American Revolutionary War by the army of the Comte de Rochambeau from Providence, Rhode Island, to Yorktown, Virginia, as well as the return route and troop encampments. The initial march south, from June 10 to September 30, 1781, is shown by the white line, with two solid black borders. The route proceeds from Providence to Head of Elk and Annapolis, Maryland, and then along the Chesapeake Bay to Williamsburg and Yorktown (camps 1‒40). The route of the supply train is represented by the yellow line from “Scott's House” southward to Williamsburg. The flanking march of Lauzun’s Legion is shown by the red line from Lebanon, Connecticut to Philipsburg, New York. Camps on the return march follow the yellow line from Williamsburg to “Spurrier’s Tavern” and continue along the white line to Boston. Camps along the dashed line (red rectangles) from Princeton, New Jersey, to King’s Ferry represent the flanking march of Lauzun’s Legion on the return march. The map is hand-colored. The title is from the manuscript label that was on the verso of the map as it was originally mounted. The map is from the Rochambeau Collection at the Library of Congress, which consists of 40 manuscript maps, 26 printed maps, and a manuscript atlas that belonged to Jean-Baptiste-Donatien de Vimeur, comte de Rochambeau (1725‒1807), commander in chief of the French expeditionary army (1780‒82) during the American Revolution. Some of the maps were used by Rochambeau during the war. Dating from 1717 to 1795, the maps cover much of eastern North America, from Newfoundland and Labrador in the north to Haiti in the south. The collection includes maps of cities, maps showing Revolutionary War battles and military campaigns, and early state maps from the 1790s.