J. Stanley Lemons, "The Sheppard-Towner Act: Progressivism in the 1920s," Journal of American History Vol. 55, No. 4 (Mar., 1969), pp. 776–786 in JSTOR
James R. Barrett, "Americanization from the Bottom, Up: Immigration and the Remaking of the American Working Class, 1880–1930," Journal of American History 79 (December 1992): 996–1020. in JSTOR
Arthur S. Link, “What Happened to the Progressive Movement in the 1920s?," American Historical Review Vol. 64, No. 4 (Jul., 1959), pp. 833–851 in JSTOR
Susan Zeiger, "Finding a cure for war: Women's politics and the peace movement in the 1920s," Journal of Social History, Fall 1990, Vol. 24 Issue 1, pp 69–86 in JSTOR
On purification, see David W. Southern, The Malignant Heritage: Yankee Progressives and the Negro Question, 1901–1914, (1968); Southern, The Progressive Era And Race: Reaction And Reform 1900–1917 (2005); Steven Mintz, "Beaner Restriction" in Digital History; Norman H. Clark, Deliver Us from Evil: An Interpretation of American Prohibition (1976) p 170; and Aileen Kraditor, The Ideas of the Woman Suffrage Movement: 1890–1920 (1967). 134–36
