SOMBART, WERNER. Socialism and the Social Movement (Trans.). New York, 1909.

SPARGO, JOHN. Socialism. New York, 1909. Syndicalism, Industrial Unionism and Socialism. New York, 1913.

---- and ARNER, G.B.L. Elements of Socialism. New York, 1912.

SPENCER, ANNA GARLIN. Woman and Social Culture. New York, 1913.

SUMNER, HELEN L. History of Women in Industry in the United States.

Vol. IX of the United States Report on the Condition of Women and Child Wage Earners. 1910.

THOMAS, W.I. s.e.x and Society. University of Chicago Press, 1907.

VAN KLEECK, MARY. Artificial Flower Making. Women in the Bookbinding Trade. Russell Sage Foundation publications, 1912.

VAN VORST, BESSIE and MARIE. The Woman Who Toils. New York, 1903.

WARD, LESTER F. Pure Sociology (especially Chapter XIV). New York.

WEBB, SIDNEY. Economic Theory of a Legal Minimum Wage. _Journal of Political Economy_, Vol. 20, No. 12., Dec., 1912.

---- and BEATRICE. History of Trade Unionism. London, 1907.

WELLS, H.G. New Worlds for Old. New York, 1909.

WEYL, WALTER E. The New Democracy. New York, 1910.

WILLETT, M.H. Employment of Women in the Clothing Trades. Columbia University. New York, 1902.

WILSON, JENNIE L. Legal and Political Status of Women in the United States.

WINSLOW, CHARLES H.; Editor. Twenty-fifth Annual Report of the United States Bureau of Labor, Industrial Training.

WOLFE, F.E. Admission to Labor Unions. Johns Hopkins University Press.

MINIMUM WAGE, THE CASE FOR. By Louis D. Brandeis, M.B. Hammond, John A. Hobson, Florence Kelley, Esther Packard, Elizabeth C. Watson, Howard B. Woolston. _The Survey_, Feb. 6, 1915.

_Periodicals and Reports_

_American Federationist, A.F. of L. Newsletter_, and other publications of the American Federation of Labor. Washington, D.C.

_American Legislation Review_ and other publications of the American a.s.sociation for Labor Legislation. New York.

_Annals of the American Academy of Political Science_. Philadelphia.

_Child Labor Bulletin, The_ (National), and other publications of the National Child Labor Committee, New York.

Commercial Club of Chicago. Publications on Vocational Training.

_Crisis, The_. New York.

_Economic Review_.

_Forerunner, The_. New York.

_Immigrant in America Review, The_. New York.

_Journal of Political Economy, The_. University of Chicago Press.

_Journal of Sociology, The_. University of Chicago Press.

_Labour Leader, The_. Manchester, England.

_Labour Woman, The_, and other publications of the National Women's Labour League. London.

_Life and Labor_, and other publications of the National Women's Trade Union League of America. Chicago; and of the local leagues in Boston, Chicago, New York and elsewhere.

_Ma.s.ses, The_. New York.

National Consumers' League, Publications of. New York.

National Society for the Promotion of Industrial Education, Publications of. New York.

_New Republic, The_. New York.

New York State Factory Investigation Commission, Reports. New York.

_New York Sunday Call, The_. New York.

_Political Science Quarterly_. Columbia University.

_Public, The_. Chicago.

_Quarterly Journal of Economics_. Harvard University.

_Survey, The_. New York.

_Union Labor Advocate_. Woman's Department, up to Dec., 1910.

United States Bureau of Education. Bulletins on vocational education.

---- Census of 1910. Occupational statistics.

---- Children's Bureau. Bulletins.