Other
Pittsburg Post Gazette: Ohio Embankments Evidence of Sophisticated Culture
News article offering details of Great Circle of Newark Earthworks.
Archaeological Institute of America
Archaeology Magazine Archive: Who Were the Hopewell?
Read this informative article from the Archaelogy Magazine discussing the Hopewell culture, its agriculture and village life, and primarilty the ceremonial earthworks for which the culture is so famous.
Curated OER
Wikipedia: National Historic Landmarks in Ohio: Newark Earthworks
An image of the Newark Earthworks.