| GM17 Geologic Map of the Harbeson Quadrangle, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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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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| OFR39 Basic Data for the Geologic Map of the Seaford Area, Delaware |
Andres, A.S., Ramsey, K.W., Schenck, W.S. |
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| RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware |
Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |
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