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Delaware River - Wikipedia
Delaware River | Map, Crossing, George Washington, & Facts
Delaware River - American Rivers
Delaware River - WorldAtlas
Upper Delaware Scenic & Recreational River (U.S. National Park Service)
Delaware River - Wikiwand
Delaware River Watershed | Audubon
Delaware River Facts: Get to Know This Important Waterway
Delaware (Middle) River - Rivers.gov
Delaware River Water Trail - Interactive Map