100. Geophysical Investigations at Two Residences Associated with Ulysses S. Grant in St. Louis County, Missouri.
DeVore, Steven L.
The project consisted of geophysical investigations at the Hardscrabble residence (23SL1223) at the cemetery on St. Paul Churchyard and the Wish-ton-wish residence (23SL1222) on Anheuser-Busch’s Grant’s Farm. At Hardscrabble, the geophysical investigations included magnetic gradient, conductivity, and ground-penetrating radar surveys. A total area of 6,400 square meters was investigated including 4,800 square meters with fluxgate gradiometer, 2,000 square meters with a ground conductivity meter, and 400 square meters with a ground-penetrating radar cart system with a 400 mHz antenna. The results of the magnetic gradient survey indicated a roughly triangular area in the open grassy lawn adjacent to Rock Hill Road. Within the triangular area of magnetic anomalies, a rectangular depression was noted in one of the grid units, which may have been the location of the log cabin built by Ulysses S. Grant. Conductivity and radar data provided additional information on the nature of selected portions of the site.