Keywords: USGS Idaho Montana 1900 Topo Map of Survey Line Monuments small.jpg en USGS Idaho Montana 1900 Topo Map of Survey Line Monuments reduced size file 1900-2-21 12 00 00 United States Government Printing Office United States Geological Survey No 170 Department of the Interior 49 000000 -116 050639 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 PD-USGov United States Geological Survey markers Surveying in the United States Uploaded with UploadWizard |