DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| SP16 Generalized Geologic Map of Delaware, Postcard | DGS Staff | |
| OFR13 Delaware's Extractive Mineral Industry | Doyle, R.G., Pickett, T.E. | |
| SP9 Generalized Geologic Map of Delaware | Pickett, T.E., Spoljaric, N., Jordan, R.R. |