Early U.S. Geological Survey Monuments 1902 Triangulation
UNITED STATES
GEOLOGICAL SURVEY
(Colorado)
Colorado Rocky Mountain Region
Back to USGS Monuments
© Jerry Penry 2015
UNITED STATES
GEOLOGICAL SURVEY
(Colorado)Early U.S. Geological Survey Monuments
Colorado Rocky Mountain Region1902 Triangulation
HORSETOOTH
Back to USGS Monuments
© Jerry Penry 2015