Nice example of the 1819 edition of A. P. Folie's fine map of Philadelphia, significantly revised and improved by Robert Desilver, formerly the property of David McNeel Stauffer, author of
American Engravers Upon Copper and Steel.
As noted by Snyder, Folie's map of 1794 was "published as late as 1819 after the plate had come into the hands of one of the first antiquarian booksellers of Philadelphia, Robert DeSilver."
Desilver, however, greatly improved the map to provide the public with an updated view of the city. Compared to Folie's original 1794, the growth of the city is evident. Besides having many more references, the intersection of Broad and High [i.e. Market] Streets shows the more familiar Centre Square as layed out by Benjamin Harris Latrobe.
This late edition of Folie's map is not only a significantly revised and improved map, it is by far the rarest edition. OCLC locates only 2 examples (Yale and Library of Congress), whereas ther are 10 examples of the 1794 edition listed in OCLC.