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Description
A wooden triangulation tower within a tower. Inner tower was to support theinstrument while the outer tower supported the observer. (Image credit: Mr. Floyd Risvold, USC&GS; | Mr. Oscar Risvold)
Credit
Mr. Floyd Risvold, USC&GS;
Photographer
Mr. Oscar Risvold
Display Date
1923
Location
Alaska, Between Anchorage and Fairbanks
Collection
Historic Coast & Geodetic Survey
Geodesy
Oscar and Floyd Risvold
NOAA Affiliation
USC&GS;