4 public-domain matches

Hours Of Labor

Cover of Droit à la paresse

Droit à la paresse

Paul Lafargue

Cover of Limitation of Hours of Labor and the Supreme Court

Limitation of Hours of Labor and the Supreme Court

Ernst Freund

Cover of Factory children

Factory children

George E. McNeill

Cover of Wages and hours of labor in the manufacture of paper products in Massachusetts

Wages and hours of labor in the manufacture of paper products in Massachusetts

Massachusetts. Bureau of Statistics.