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![Field sketch of signal pole on tree stump theb2463.jpg Field sketch of signal pole on tree stump](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2463.jpg?itok=-HHbQ-FI)
Description
Field sketch of signal pole on tree stump.Sketch by Cephas Sinclair (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1888
Location
Louisiana, Atchafalaya River,
Collection
Historic Coast & Geodetic Survey
Geodesy
Triangulation
Wooden Towers & Signal Poles
Keywords
Geodesy
Triangulation
Towers
Wooden