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Signal pole with acetylene lamps that could be raised to heights of40 to 60 feet by means of pulleys

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23cgs02458jpg

Description

Signal pole with acetylene lamps that could be raised to heights of40 to 60 feet by means of pulleys. (Image credit: Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album)

Credit

Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album

Display Date

1906

Keywords

Coast and Geodetic Survey