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![Helicopter view of photo panel in Kalgin Island area theb0977.jpg Helicopter view of photo panel in Kalgin Island area](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb0977.jpg?itok=oyYtbB99)
Description
Helicopter view of photo panel in Kalgin Island area.These panels served to locate control points in aerial photographs (Image credit: C&GS; Season's Report Watkins 1965-97)
Credit
C&GS; Season's Report Watkins 1965-97
Display Date
1965
Location
Alaska, Prince William Sound
Collection
Historic Coast & Geodetic Survey
Geodesy
Topography-Mapping the Shoreline
Photogrammetry
Keywords
Geodesy
Topography
Photogrammetry