Photos # 5-7 show stages in completing a 50-foot tower at Station Tatum.Photo #8 shows theodolite being transported to top of tower.Triangulation party of Wilbur Porter.Photos # 5-8 of sequence
3/18/2019 2:24:55 PM
Date: 11-Feb-35
Credit: NOAA, George E. Marsh Album
Location: Lea County, New Mexico
Subject: Geodesy
Subject: Triangulation
Subject: Towers
Subject: Bilby Steel