by United States. National Park Service

1922

by National Safety Council

1928

by National Safety Council. Safety Congress

1928

by National Conference on Social Welfare

1925

by National Conference on Social Welfare

1921

by National Conference of Social Work (U.S.). Annual Forum

1928

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

1924

by National Conference of Charities and Correction (U.S.)

1915

by National Conference on Social Welfare

1909

by National Education Association of the United States

1922

by Curtis Edmunds Lakeman, American National Red Cross. Department of Civilian Relief

1918

by American National Red Cross. Pacific Division, San Francisco

1919