DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| RI53 Geology of the Seaford Area, Delaware | Andres, A.S., Ramsey, K.W., Groot, J.J. | |
| RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware | Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |