USGS "Survey of the Boundary Line Between Idaho and Montana from the International Boundary to the Crest of the Bitterroot Mountains." Surveyed in 1897-1898. Bulletin of the United States Geological Survey No. 170, Department of the Interior. Printed in 1900 by US Government Printing Office. Photographic and Drawn Plates (images) of the field work of the survey. Stone Survey Monuments. Iron Post Survey Monuments. Placed into the Public Domain by government of USA. Printed more than 114 years prior to time of upload.
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
This photo was taken in 1898 near the Scotchman Peak survey station of the USGS Idaho Montana Boundary 1897 Survey Control Diagram of Triangulation from Spokane
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