Other
Emazine: The "Gilded Age" in the United States
This article from a wider history of the world focuses on presidential administrations from Benjamin Harrison in 1890 through the Wilson administration. Read about the domestic policies and foreign affairs from 1890-1920.
Other
Polytechnic School: The Progressive Era
A great outline that highlights the important parts of the Progressive Era from those involved in reforms to the reform programs themselves. Not much detail, but good information.
Other
Ibew: Clayton Antitrust Act of 1914
Read a brief description of the Clayton Antitrust Act, which Samuel Gompers considered the Magna Carta of labor legislation.
Other
Gongol.com: Clayton Anti Trust Act
Brian Gongol has posted an excellent essay describing and analyzing the Clayton Anti-Trust Act.
Shmoop University
Shmoop: Progressive Era Politics Timeline
A timeline of Progressive Era legislation with brief descriptions of the laws.