| GM24 Geologic Map of the Millington, Clayton and Smyrna Quadrangles, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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| RI78 Subsurface Geology of the Area Between Wrangle Hill and Delaware City, Delaware |
Jengo, J.W., McLaughlin, P.P., Ramsey, K.W. |
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| RI75 Stratigraphy and Correlation of the Oligocene to Pleistocene Section at Bethany Beach, Delaware |
McLaughlin, P.P., Miller, K.G., Browning, J.V., Ramsey, K.W., Benson, R.N., Tomlinson, J.L., Sugarman, P.J. |
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| OFR13 Delaware's Extractive Mineral Industry |
Doyle, R.G., Pickett, T.E. |
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