Digital Library Search
![Observing tower at Station Pen in Washington state cgs02457.jpg Observing tower at Station Pen in Washington state](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs02457.jpg?itok=CLrzvMVS)
Description
Observing tower at Station Pen in Washington state. The towerwas built around a tree trunk which was stripped of branches. The tree trunkserved as the instrument stand. Observer was J. S. Hill, Chief of Party O. B.French. (Image credit: Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album)