Completed tower with internal instrument tripod at Station Foss.This station took 1 and 1/2 days to complete.Photo #5 of sequence
3/18/2019 3:06:42 PM
Date: 1904
Credit: NOAA, John Hayford Album
Location: Minnesota, Wilkin County
Subject: Geodesy
Subject: Triangulation
Subject: Towers
Subject: Wooden