Clippings, booklets, pamphlets, speeches, programs of conferences, and reports collected by Mahony, 1923-1969. The bulk of the material relates to Mahony's work with and concern for Mexican immigrant labor working in the sugar beet industry. Other topics include the Ku Klux Klan in Colorado; the Plattesville, CO. Bible reading controversy; child labor; and atheistic communism. Included is material pertaining to Mahony's work with several organizations including the League of Nations, the Child Welfare Committee, the Knights of Columbus Welfare Committee, Catholic Charities, and National Catholic Social Action Committee.