Article by George Lee Dowd JR about ultraviolet rays benefit for health published in american magazine “Popular science monthly” in january 1931 - from our story 'Light Therapy For Naked Children, Delicate Adults, Sick Pigs And Quacks (Photos: 1900-1950)'

UNSPECIFIED - SEPTEMBER 07: Article by George Lee Dowd JR about ultraviolet rays benefit for health published in american magazine "Popular science monthly" in january 1931 (Photo by Apic/Getty Images)

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