Author: Spencer, Frank Darwyn, 1904- / Access: Public - Yale University Library GeoBlacklight Search Results

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1. Geologic map of the Louisville quadrangle, Boulder County, Colorado / [cartographic material]

1961. 2011-05-09T17:33:36Z. 2012-02-14T23:33:10Z. Spencer, Frank Darwyn, 1904-. The Survey. English. Public. Colorado and Boulder County.

2. Geology of parts of the Rockport and Lewisport quadrangles, Kentucky [cartographic material]

1964. 2011-06-15T19:50:39Z. 2012-02-13T19:48:32Z. Spencer, Frank Darwyn, 1904-. U.S. Geological Survey. English. Public. Kentucky, Hancock County, and Daviess County.

3. Geology of the Boltsfork quadrangle and part of the Burnaugh quadrangle, Kentucky [cartographic material]

1964. 2011-06-15T19:57:00Z. 2021-08-20T21:33:34Z. Spencer, Frank Darwyn, 1904-. U.S. Geological Survey. English. Public. Kentucky, Boyd County, and Lawrence County.

4. Geology of the Pellville quadrangle, Kentucky [cartographic material]

1963. 2011-06-07T19:52:37Z. 2012-02-14T23:37:39Z. Spencer, Frank Darwyn, 1904-. U.S. Geological Survey. English. Public. Kentucky, Daviess County, and Hancock County.

5. Geology of the Tell City quadrangle, Kentucky-Indiana [cartographic material]

1964. 2011-12-09T16:19:52Z. 2012-03-05T17:22:21Z. Spencer, Frank Darwyn, 1904-. U.S. Geological Survey. English. Public. Indiana, Spencer County, Perry County, Kentucky, Hancock County, and U.S.

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