<div class="description">
<p>The topographical map document geological fieldwork completed by August Foerste in Ontario, Canada (undated). Notations indicate locations of formations and whether they are Silurian or Trenton. Regions are colored, and there is a key
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<br>Subjects: Geology</div>
<div class="fn value">
Foerste, Aug. F (Aug. Frederic), 1862-1936</div>
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