![Dr. J. Harris Rogers, of Hyattsville, MD., inventor of underground and under water radio communication systems, is shown with the loop antenna he used recently in receiving signals from [...] the Atlantic Ocean, this loop was submerged as well](https://thumbs.arkivism.com/loc-2016887622.jpg)
Public domain
Dr. J. Harris Rogers, of Hyattsville, MD., inventor of underground and under water radio communication systems, is shown with the loop antenna he used recently in receiving signals from [...] the Atlantic Ocean, this loop was submerged as well
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Subjects
Credit lineDr. J. Harris Rogers, of Hyattsville, MD., inventor of underground and under water radio communication systems, is shown with the loop antenna he used recently in receiving signals from [...] the Atla. 1923. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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