Violet Ray -1921A.jpg Scientific American 1901-08-31ThumbnailsScientific American 1901-08-31ThumbnailsScientific American 1901-08-31ThumbnailsScientific American 1901-08-31ThumbnailsScientific American 1901-08-31Thumbnails
Renulife Electric Company, of Detroit, Michigan. Drive out aches, pains, and the cause of sickness. Published in the August, 1921 issue of SCIENCE AND INVENTION.



Source: Magazine collector Steve Davis

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