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![Ralph Pfau (l) theb3559.jpg Ralph Pfau (l)](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb3559.jpg)
Description
Ralph Pfau (l).Early morning computing of previous night's astronomic observations
Credit
C&GS; Season's Report Pfau 1930
Display Date
1930
Location
Upper Midwest of United States
Collection
Historic Coast & Geodetic Survey
Keywords
Personnel
Group Portrait
Ralph Pfau