Khan Academy
Khan Academy: Ap Us History: 1865 1898: The Gilded Age: The Knights of Labor
Discusses the rise of labor unions and the history of the Knights of Labor. After the Haymarket Square riots, members deserted it and many joined the American Federation of Labor instead. Includes questions for students at end.
Ohio History Central
Ohio History Central: American Federation of Labor
A history of the American Federation of Labor and its organization in 1881 by Samuel Gompers. Read about its growth and eventual combining with the Congress of Industrial Organization to become the AFL-CIO.
University of Houston
University of Houston: Engines of Our Ingenuity: American Industrial Revolution
Aimed at middle school teachers and students, this resource contains lists of labor links. It includes a brief history of strikes, the Knights of Labor and the AFL.