HUMPHREY, J.R. Proportional Representation. London, 1911.

ILLINOIS STATE FEDERATION OF LABOR. Report of Committee on Vocational
Education, 1914.

JACOBI, ABRAHAM. Physical Cost of Women's Work. New York, 1907.

KELLEY, FLORENCE. Modern Industry in Relation to the Family. New York, 1915.

—— Some Ethical Gains Through Legislation. New York, 1906.

KELLOR, FRANCES A. Out of Work. New York, 1915 ed.

KERCHENSTEINER, G.M.A. Idea of the Industrial School (Trans.). New
York, 1913.

—— Schools and the Nation (Trans.). London, 1914.

KEY, ELLEN. The Woman Movement (Trans.). New York, 1912.

KIRKUP, THOMAS. History of Socialism. London, 1906.