The educational directories for 1912, 1913, 1914, 1915, and 1916 United States Bureau of Education cover some of the following categories: (1) Chief State school officers; (2) Officers of State boards of education; (3) Executive officers of State library commissions; (4) Superintendents in cities and towns of 4,000 population and over; (5) County superintendents; (6) University and college presidents; (7) Professors of pedagogy and heads of departments of pedagogy in universities and colleges; (8) Principals of normal schools; (9) Summer school directors; and (10) American educational associations, national and sectional.