Citations

1. Massachusetts Board of Education. Department of University Extension. "Americanization Letter". By John Mahoney, Payson Smith, and James Moyer. Vol. 1. 1919.

2. Butler, Fred Clayton. "State Americanization: The Part of the State in the Education and Assimilation of the Immigrant". 1920. 10. 

3. Harris, Hannah Margaret. "Lessons in Civics for the Three Primary Grades of City Schools". Washington, D.C., 1920. 6, 21, 31.