English

Frederick Finch Strong Scrapbook and Compilation

Scrapbook and photo archive of Dr. Frederick Finch Strong. Strong was inventor of the glass vacuuum "Violet Ray" electrode commonly used for electrotherapy using Tesla Coils in 1896. He wrote a historical book "High Frequency Currents" in 1908, and spent much of the 1920s and 30s lecturing around the country on Theosophy, the occult, spiritualism, and medicine.

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