USGS Geospatial Liaison to Missouri » Directory USGS Geospatial Liaison to Missouri » Directory Go back to directory. Add to Address Book. USGS Geospatial Liaison to Missouri USGS Geospatial Liaison to MissouriUSGS National Geospatial Program Contact: Mitch Bergeson Work Email: dnail@usgs.govINTERNET Categories: Ex-officio, Federal Updated 3 weeks ago.