National Park Service, Southwest Regional Office, Santa Fe No description specified. 1-2 (2 Records) Documents Archeological Survey of the Proposed Buffalo River Trail, Hemmed-In-Hollow, Ponca Area, Newton County, Arkansas, and a Reconnaissance of the Henderson Farm Historic Site (1979) Archeological Survey: Buffalo River Trail, Hemmed-In-Hollow, Ponco Area, Newton County, Arkansas (1979)