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

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

July 25, 2016 12:16 PM