Claim: Oxbow National Wildlife Refuge is a property of the United States National Wildlife Refuge ( a designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service) located in Middlesex and Worcester counties in Massachusetts.
Evidence: Oxbow National Wildlife Refuge is a property of the United States National Wildlife Refuge (NWR) system located in Middlesex and Worcester counties in Massachusetts. National Wildlife Refuge System is a designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service.