Illustrating use of planetable, Canadian boundary. circa 1906.
Dates
Acquisition
1906
Summary
Album caption: Topography C #3: On Canadian boundary, J.G. Hefty; time and photographer unknown. Illustrating use of Planetable. Topographer and recorder. Index card: Geologists at work. Topography C no. 3 (San Francisco Exposition no. 72): On Canadian boundary, J.G. Hefty. Illustrating use of planetable. Topographer and recorder. n.d.
Summary
Album caption: Topography C #3: On Canadian boundary, J.G. Hefty; time and photographer unknown. Illustrating use of Planetable. Topographer and recorder.
Index card: Geologists at work. Topography C no. 3 (San Francisco Exposition no. 72): On Canadian boundary, J.G. Hefty. Illustrating use of planetable. Topographer and recorder. n.d.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Topography C collection, photograph number 3.
Rights
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