76 HULL—HOUSE MAPS AND PAPERS. 
they shorten the average of the trade life, and they 
lower the standard of living of the adults with whom 
they compete. 
BIBLIOGRAPHY OF CHILD-LABOR IN THE UNITED STATES. 
Third Special Report of United States Commissioner of Labor, 
1893, pp. 254-258. References cover official data to Nov. 30, 
1892. 
Report Chief of Massachusetts District Police, 1893. 
New York Factory Inspector's Report, 1893. 
Illinois Factory Inspector's Report, 1893. 
Report Convention International Factory Inspectors' Associa- 
tion, 1893. 
Symposium on Child Labor, Arena, June, 1894: Assistant 
Inspector Stevens of Illinois; Miss Alice L. Woodbridge, Secre- 
tary New York Working Women's Society; and Prof. Thomas E. 
Will. 
Factory Children — White Child Slavery, Helen Campbell 
and others, Arena, i. 589. 
Prisoners of Poverty, Helen Campbell, Boston, 1887. 
Labor of Children, W. F. Willoughby and Clare de Graffen- 
reid, American Economic Association, v. 5. 
Our Toiling Children, F. K. Wischnewetzky, pamphlet; 
Women's Christian Temperance Publishing Association, 1889. 
Report of Connecticut Bureau of Labor Statistics, 1889.