Labor Problems [microform]Thomas Sewall 1873-1933 Adams, Helen L. (Helen Laura) 1876- Sumner, Richard T. (Richard Theodore) 1 Ely · First published 2021Open the Tome
Administration of Child Labor LawsUnited States Children's Bureau, Helen L. 1876-1933 Sumner, Ethel E. B. 1883 Hanks · First published 2018Open the Tome
The white slave, or, The cross of goldHelen L. Sumner · First published 1896 · Latest edition 1970Open the Tome
History of Labour in the United States in Four Volumes (Volume II)John R. Commons, David J. Saposs, Helen L. Sumner, E.B. Mittelman, H.E. Hoagland, Selig Perlman, John B. Andrews · First published 1951Open the Tome
Administration of child labor lawsHelen L. Sumner · First published 1915 · Latest edition 1917Open the Tome
Labor problems;Thomas Sewall Adams,Ph.D. and Helen L. SumneR,A.B. · First published 1914Open the Tome
A Documentary History of American Industrial Society Volume 10 Labor Movement 1860-1880Commons, John R. & Phillips, Ulrich B. & Gilmore, Eugene A. & Sumner, Helen L. & Andrews, John B. · First published 1911Open the Tome
A Documentary History of American Industrial Society Volume 8 Labor Movement 1840-1860Commons, John R. & Phillips, Ulrich B. & Gilmore, Eugene A. & Sumner, Helen L. & Andrews, John B. · First published 1910Open the Tome
![Cover of Labor Problems [microform]](https://covers.openlibrary.org/b/isbn/9781013372933-M.jpg?default=false)
