DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| GM26 Geologic Map of the Cecilton and Middletown Quadrangles, Delaware | Tomlinson, J.L., Ramsey, K.W. | |
| GM13 Geologic Map of New Castle County, Delaware | Ramsey, K.W. | |
| GM 2 Geology of the Middletown-Odessa Area, Delaware | Pickett, T.E., Spoljaric, N. |