by Conference on Christian Politics, Economics and Citizenship. Commission on Education

1924

by National Conference of Jewish Social Service (U.S.)

1927

by National Conference on Adult Education, Chicago, 1926

1926

by Music Educators National Conference (U.S.)

1920

by National University Extension Association. Conference

1927

by National Conference on Educational Method

1928

by West Virginia University. Educational Conference

1913

by World Federation of Education Associations. Conference, World Federation of Education Associations

1925

by National Conference on Social Welfare

1925

by Ohio State Educational Conference

1929

by National Conference of Jewish Social Service (U.S.)

1927

by Friends General Conference (U.S.)

1908