Bread and Roses: The Lost Histories of a Slogan and a Poem: Long thought to have been inspired by the 1912 strike by textile workers in Lawrence, Massachusetts, James Oppenheim's poem was actually inspired by earlier labor struggles.
Child Labour 1750-1850: Extensive treatment of the topic, from the Encyclopaedia of British History.
Labor Arts: Virtual museum exhibiting and cataloging the art of the labor movement and working people. Collections include parades, cartoon art on labor themes, and buttons and badges.