| GM10 Bedrock Geologic Map of the Piedmont of Delaware and Adjacent Pennsylvania |
Schenck, W.S., Plank, M.O., Srogi, L. |
|
| OFR13 Delaware's Extractive Mineral Industry |
Doyle, R.G., Pickett, T.E. |
|
| GM 5 Geology of the Smyrna-Clayton Area, Delaware |
Pickett, T.E., Benson, R.N. |
|
| OFR9 Geologic Field Trips in Delaware |
Benson, R.N., Hahn, W.F., Jordan, R.R., Pickett, T.E., Talley, J.H., Thompson, A.M., Woodruff, K.D. |
|
| SP9 Generalized Geologic Map of Delaware |
Pickett, T.E., Spoljaric, N., Jordan, R.R. |
|
| RI14 Delaware Clay Resources |
Pickett, T.E. |
|
