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Primary Sources and Picture Books: Jack Knight's Brave Flight by Jill Esbaum and Stacy Innerst

Photograph of airmail pilot Jack Knight and unidentified individual

Photograph of airmail planes at Omaha, Nebraska

New Britain Herald, February 23, 1921

Omaha Daily Bee., February 24, 1921

The Mankato Free Press, February 25, 1921

The Rock Island Argus and Daily Union, February 26, 1921

Casper Daily Tribune, January 06, 1921

Omaha Daily Bee., May 19, 1921