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![Francis X theb1748.jpg Francis X](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1748.jpg?itok=ZgGAgrXh)
Description
Francis X. Popper taking sight with alidade.Plane table work on the Sacramento River Delta (Image credit: Captain Francis X. Popper, C&GS;)
Credit
Captain Francis X. Popper, C&GS;
Display Date
9-Jan-41
Location
Sacramento River Delta, California
Collection
Historic Coast & Geodetic Survey
Geodesy
Topography-Mapping the Shoreline
Plane Table Mapping
Keywords
Topography
Plane Table