The educational directories for 1920, 1921, 1922, 1923, 1924, and 1925 United States Bureau of Education cover some of the following categories: educational activities for various government departments and independent establishments; school officers and superintendents for state schools, state boards of education, county and other local schools, and public schools in cities and towns; business managers and chief medical inspectors for cities of over 30,000 population; presidents, deans, and directors for universities, colleges, and for various schools within universities; summer school directors; directors of museums; librarians, executive officers, and directors of public, state, and society libraries, commissions, and library schools; educational boards, foundations, and organizations for Jewish and Catholic parochial schools; directors of schools for social workers; international and American associations of education; learned and civic organizations; State Federation of Women's Clubs; National Congress of Mothers and Parent-Teachers Associations; and educational periodicals.