Question: Which river is near the Rumford Archeological Sites with prehistoric Native American items from 7000BCE to the Late Woodland period? 
Sentence (from "Woodland period"): In the classification of , the Woodland period of North American pre-Columbian cultures spanned a period from roughly 1000 BCE to European contact in the eastern part of North America, with some archaeologists distinguishing the Mississippian period, from 1000 CE to European contact as a separate period.
Relevant evidence: Yes