Demonstrating the source of vigorous energy. Dr. A.T. Sanden (ca. 1910), 36, ephemera collection. Courtesy of the Bakken Library and Museum of Electricity in Life, Minneapolis.

From The body electric: how strange machines built the modern American by Carolyn Thomas de la Peña

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Demonstrating the source of vigorous energy. Dr. A.T. Sanden (ca. 1910), 36, ephemera collection. Courtesy of the Bakken Library and Museum of Electricity in Life, Minneapolis.
  • Fig. 25. Demonstrating the source of vigorous energy. Dr. A.T. Sanden (ca. 1910), 36, ephemera collection. Courtesy of the Bakken Library and Museum of Electricity in Life, Minneapolis.