Triangulation signal, Leadville district, Lake County, Colorado. 1911.
Dates
Date Taken
1911
Summary
Album caption: Leadville district, Colorado, special survey, triangulation signal, 1911. E.P. Davis, topographer. Picture by R.B. Marshall, chief geographer. Handwritten notes on album caption: Lake County Index card: Triangulation signal. Lake County, Colorado. 1911.
Summary
Album caption: Leadville district, Colorado, special survey, triangulation signal, 1911. E.P. Davis, topographer. Picture by R.B. Marshall, chief geographer.
Handwritten notes on album caption: Lake County
Index card: Triangulation signal. Lake County, Colorado. 1911.
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Available in the U.S. Geological Survey, Denver Library Photographic Collection, Topography A Collection.
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