DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| RI78 Subsurface Geology of the Area Between Wrangle Hill and Delaware City, Delaware | Jengo, J.W., McLaughlin, P.P., Ramsey, K.W. | |
| GM17 Geologic Map of the Harbeson Quadrangle, Delaware | Ramsey, K.W., Tomlinson, J.L. | |
| RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware | Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |