Nichole Hine, a research intern at the Tacoma Historial Society, shows a 1947 photo of College of Puget Sound's Dr. Robert Sprenger with a rainmaking machine he built.
Nichole Hine, a research intern at the Tacoma Historial Society, shows a 1947 photo of College of Puget Sound's Dr. Robert Sprenger with a rainmaking machine he built. Peter Haley phaley@thenewstribune.com
Nichole Hine, a research intern at the Tacoma Historial Society, shows a 1947 photo of College of Puget Sound's Dr. Robert Sprenger with a rainmaking machine he built. Peter Haley phaley@thenewstribune.com

McClatchy's America

July 26, 2016 4:15 PM

Tacoma’s rainmaker: The search for a professor’s long-lost invention

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