<div class="description">
<p>The map documents geological fieldwork completed by August Foerste in the vicinity of Dayton, Ohio, 1909 - 1910. The map, published by U. S. Geological Survey, includes annotations and markings indicating geological layers from the Silurian period. Some notes are numbered bases or place names
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<br>Subjects: Geology</div>
<div class="fn value">
Foerste, Aug. F (Aug. Frederic), 1862-1936</div>
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