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The "Percy Map"
The Cartographic Image of New England and Strategic Planning during the American Revolution
Provenance and Dating the Use of the Map

This document gives a brief description of the Percy Map and discusses the rather ambiguous technical evidence provided by the various annotations made to it.

percy
map
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The "Percy Map" is a copy of the second edition, second issue of the Jefferys-Green Map of the Most Inhabited Part of New England, issued in London in 1768. It was purchased and used by Hugh, earl Percy, future second duke of Northumberland. The donor acquired the map from dealers who had, in turn, purchased it from a May 1997 auction of possessions of the Percy family. The auction included several other maps (see Mercator's World 2, no.5 [Sep/Oct 1997], 68-69). Until the auction, the map had resided in the Percy family's archives at Alnwick Castle. The provenance of the map is thus certain.

The map is shown at left. A set of more detailed images is also available, accessible from the index to graphic images. As can be readily seen from these reproductions, the map itself was dissected and mounted on cloth, a common practice in the eighteenth century when map owners wanted to fold up large maps for easy handling. Indeed, all of the Percy maps in the auction were treated in the same manner.

percy bookplate
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Several of the maps in the auction bear two characteristic additions on the map's verso. Those on the Map of the Most Inhabited Part of New England are shown at left. The staining of the cloth indicates that this was one of the two segments exposed once the map was folded up.

The first addition, in a late eighteenth-century hand, is the ink annotation "Ld. Percy | New-England." This served not only to indicate the map's owner but also to identify the map when it was folded and, presumably, placed with similarly dissected maps. That this annotation identified "Lord Percy" dates it to before 1786, when Hugh Percy inherited his father's dukedom and ceased to be known by that title (see the brief history of the Percies). The similarity of these annotations across several maps strongly suggests that the maps were labeled as a set. The annotated maps all appear to pre-date Percy's return to Britain in 1777; at the very least, the annotations confirm the ownership of this map by Hugh, earl Percy.

The second addition to the verso, just below the inked lettering, is a pasted-on bookplate. This bears the Percy badge (not the family's crest or "arms"): "A crescent argent within the horns, per pale, sable and gules charged with a double manacle fesseways or" (Burke & Burke 1884, art. "Percy"). The badge is enclosed in the badge of the Order of the Garter and surmounted by a ducal coronet. This combination indicates that the bookplate is that of the duke of Northumberland: either Hugh, earl Percy -- although he did not become a knight of the Garter until 1802 -- or his father (see the brief history of the Percies). That is, Hugh might have used his father's bookplates before 1786 or, more likely, the bookplate was added after 1802 by a librarian or archivist. More research is required on this point.

Conclusions drawn from these additions are that the map was certainly owned by Hugh, earl Percy before 1786 and that it was perhaps one of a set of maps giving coverage of the colonies put together for Percy to take with him to America in 1774.

Boston region
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Percy's map is notable for the annotation in ink of several roads across New England. The original, printed map had a few roads marked on, as double lines, but these were by no means all the roads that crossed the region. The inked lines on the face of the map all link towns and printed roads. The detail at left shows the area around Boston; both sets of roads are clearly visible. Without further clues, such as lettered annotations, it is impossible to say with certainty who made these annotations on the map's surface. It might indeed have been Percy himself; or it was a fellow officer. Either way, this map clearly served as a strategic planning document.

Thus, however uncertain the evidence of the additions on its verso, this map was indeed used during the Revolutionary War. We should note at this point that soon after Percy left for America, the third edition of the map was printed; had Percy bought the map after his return, it would most likely have been one of that edition.