Remote Sensing in historical archaeology

Jack, Necor, and Chan? What are the names of the three historic survey monuments (USGS map) on the west side of the Hudson River, at West Point, NY, we used to setup transponders to do an underwater magnetometer (nanoTeslas) and sonar survey of the Cold Spring, NY harbor-front on the east side of the Hudson River with Gordon Watts, Ph.D., (the nautical archaeologist who found the "U.S.S. Monitor" years ago off Cape Hatteras, North Carolina) for the West Point Foundry Cove, EPA cleanup of the Marathon Battery Site. http://worldwind.arc.nasa.gov/ - awesome map graphics site, open source.