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Waldo, Kansas. Waldo is a city in Russell County, Kansas, United States. As of the 2010 census, the city population was 30. Contents.
World War I veteran Waldo Pepper (fictitiously 1895-1931, played by Robert Redford) feels he has missed out on the glory of aerial combat after being made a flight instructor. After the war, Waldo had taken up barnstorming to make a living.oon after, at the Muncie Fair, another tragedy occurs with the Dillhoefer Circus when Ezra (flying in place of the grounded Waldo) attempts the outside loop in the monoplane. He crashes on his third attempt, and the crowd rushes out of the stands to see the wreckage.