Topographic map of eastern Ontario, undated
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.
Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at email@example.com.
August F. Foerste Papers, 1887-1933 and undated
Smithsonian Institution Archives
Box 9 Folder 2