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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