ISBN 0-19-505304-4* McGerr, Michael "A Fierce Discontent: The Rise and Fall of the Progressive Movement in America, 1870-1920" (2003)* Schutz, Aaron.
ISBN 0-19-505304-4* McGerr, Michael "A Fierce Discontent: The Rise and Fall of the Progressive Movement in America, 1870-1920" (2003)*Schutz, Aaron.