Mark Sullivan .1927. " Our Times. America Finding Herself," pp. 479, 540.
2.
Dr.A.W.J. MacFadden, Medical Officer of Health, Local Government Board. " Reports on the Work of Inspectors of Food." 1913- 14, p. 108; 1914 -15, pp. 19, 20; 1915-16, p. 2.
3.
Journal of the Royal Institute of Public Health and Hygiene , April, 1945, p. 87.