History of Labour in the United StatesJohn Rogers Commons, David Joseph Saposs, Helen Laura Sumner · First published 2015Open the Tome
Documentary History of American Industrial Society; Volume 7Carnegie Institution of Washington, Eugene Allen Gilmore, Helen Laura Sumner · First published 2018Open the Tome
History of Labour in the United States; Volume 2Helen Laura Sumner, David Joseph Saposs, Edward Becker Mittelman · First published 2018Open the Tome
Labor Problems; a Text BookRichard Theodore Ely, Thomas Sewall Adams, Helen Laura Sumner · First published 2015Open the Tome
A Documentary History of American Industrial SocietyJohn Rogers Commons, Helen Laura Sumner, John Bertram Andrews · First published 2010Open the Tome
Equal Suffrage: The Results of an Investigation League in Colorado Made for the Collegiate Equal Suffrage League of New York StateHelen Laura Sumner · First published 2010Open the Tome
History of women in industry in the United StatesHelen Laura Sumner Woodbury · First published 1974Open the Tome
