pl23_expl3258.jpg
![Brooke sounder as configured on the school ship MERCURY expl3258.jpg Brooke sounder as configured on the school ship MERCURY](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expl3258.jpg)
Description
Brooke sounder as configured on the school ship MERCURY.
Credit
NOAA Central Library Historical Collections
Collection
Voyage to Inner Space
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