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

1925

by National Conference on Social Welfare

1921

by National Child Labor Committee (U.S.)

1911

by United States National Museum

1921

by United States National Museum

1921

by United States National Museum

1921

by National Child Labor Committee (U.S.)

1911

by National Child Labor Committee (U.S.)

1911

by National Child Labor Committee (U.S.)

1910

by National Education Association of the United States

1909

by National Tuberculosis Association

1908

by National Institute of Social Sciences

1922