[44] Vocational Schools for Illinois, pp. 1-2. Published by the Commercial Club of Chicago.
[45] A Report on Vocational Training in Chicago and in Other Cities, p. 38. Published by the City Club of Chicago, 1912.
[46] Frank M. Leavitt, Examples of Industrial Education, pp. 149-151. Ginn and Company, 1912.
[47] L. R. Alderman, School Credit for Home Work, pp. 89-91. Houghton Mifflin Company, 1915.
[48] L. R. Alderman, School Credit for Home Work, pp. 32-33. Houghton Mifflin Company, 1915.
[49] H. H. Wheaton, “The United States Bureau of Education and the Immigrant.” The Annals of the American Academy of Political and Social Science, Vol. LXVII, No. 156 (September, 1916), pp. 273-274.
[50] The General Education Board: An Account of its Activities, 1902-1914, pp. 58, 61-62. New York City, 1915.
[51] Clarence Arthur Perry, Educational Extension, pp. 82-85. Cleveland Education Survey. Published by the Survey Committee of the Cleveland Foundation, 1916.
[52] Abraham Flexner, “Parents and Schools.” The Atlantic Monthly (July, 1916), pp. 26-27.
[53] William Heard Kilpatrick, The Montessori System Examined, pp. 14-15. Riverside Educational Monograph. Houghton Mifflin Company, 1914.