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Books about Koupal:
Biography - Koupal, Nancy Tystad (1947-): An article from: Contemporary Authors by Gale Reference Team (Dec 16, 2007)
Ordinary People Doing The Extraordinary: The Story of Ed and Joyce Koupal and the Initiative Process by Dwayne Hunn (2001)
Wiki information Koupal:
Louis Laddie Koupal born in Tabor, South Dakota was a pitcher for the Pittsburgh Pirates, Brooklyn Robins, Philadelphia Phillies and St. Louis Browns. He helped the Pirates win the 1925 World Series. In 6 seasons he had a 10–21 Win-Loss record, 101...