Earth Search, Inc., P.O. Box 850319, New Orleans, La No description specified. 1-2 (2 Records) Documents Archaeological Survey of 202 Acres On the Main Fort (Vernon Parish) and Peason Ridge (Sabine Parish), Fort Polk, Louisiana (1991) Archaeological Survey of 316 Acres On the Main Fort (Vernon Parish) and Peason Ridge (Natchitoches Parish), Fort Polk, Louisiana (Technical Appendix) (1990)