This excellent two-piece chart was composed and published by J.F.W. Des Barres for inclusion in the Atlantic Neptune folio, and covers the whole of the Delaware River between Bombay Hook and Philadelphia.  It is a compilation typical of the way Des Barres worked to produce charts for publication. 

The first survey of the lower part of the river from Bombay Hook, where it enters Delaware Bay, up to Chester was completed in 1779 with Soundings &c taken by Lt. Knight of the Navy.  It includes little information other than soundings and points of anchorage as this section of the river was clearly of little significance, with few settlements of note and little to defend or attack. 

The second survey from Chester up to Philadelphia has the land tinted brown with a yellow border.  This upper section of the river was surveyed by Lieutenant John Hunter of the Navy in November 1777 just after the British had occupied Philadelphia.  This upper section of the river was of great significance to both the Americans and the British as it gets closer to Philadelphia, which was then the largest city in America and its new Capital.