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. | |
| HM3 Geohydrology of the Wilmington Area, Delaware | Woodruff, K.D. | |
| HM2 Geohydrology of the Newark Area, Delaware | Woodruff, K.D. |