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A Field Guide to American Ornithology in the Delaware Valley 1699-1900

The politics and economics of a new world were forged in the environs of Philadelphia. So too, does the foundation for North American ornithology trace its roots to the Delaware Valley. Learn about the men and women and explore the locales of those who contributed to our rich ornithological landscape.

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The Delaware Valley is a term used widely to refer to the metropolitan area centered on the city of Philadelphia in the United States. The term is derived from the Delaware River, which flows through the area. Portions of Pennsylvania, New Jersey and Delaware are considered to be part of the Delaware Valley.