The brilliant blogger(s) over at Free Geography Tools have stumbled upon a really useful web application that lets you query a database of National Geodetic Survey markers, and returns a KML file to display them in Google Earth (note: earlier versions of DS World may have problems with Google Earth 5, but the newest one works fine). Its called NGS Control Stations (NGSCS) Radial Search. Despite the name, it allows search by three different areal selection methods:
- County
- Radial search from a latitude/longitude center point
- Rectangular search from a latitude/longitude center point







