[ [33] H. W. Foght, "Efficiency and Preparation of Rural School Teachers." United States Bureau of Education Bulletin No. 49, 1914, p. 19.
[ [34] Report of Superintendent of Public Instruction, North Dakota, 1914–16, pp. 84, 85, 87, 89, 109.
[ [35] "The Educational System of South Dakota," United States Bureau of Education Bulletin No. 31, 1918.
[ [36] C. P. Cary, Education in Wisconsin, 1914–16 (1917), p. 99.
[ [37] H. W. Foght, "Rural-Teacher Preparation in County Training Schools and High Schools," United States Bureau of Education Bulletin No. 31, 1917, p. 5.
[ [38] Report of Superintendent of Public Instruction, North Dakota, 1914–16, pp. 89, 107.
[ [39] Report of Superintendent of Public Instruction, North Dakota, 1914–16, pp. 52, 70.
[ [40] Report of Superintendent of Public Instruction, South Dakota, 1916.
[ [41] Report of United States Commissioner of Education, 1917, vol. ii, p. 77.
[ [42] Minnesota Department of Education, Nineteenth Biennial Report, 1915–16, p. 8.