PBS
Pbs: American Experience: The Spanish American War in the Philippines (1898)
After giving a general summary of the Spanish-American War in the Western Hemisphere, the course of the war as waged in the Philippines is explained. See how the Philippines was annexed to the United States.
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
The Louis D. Brandeis Collection: Synopsis of the Ballinger Pinchot Affair
A good summary of the Ballinger-Pinchot controversy where Richard Ballinger was accused of corruption, Collier's Magazine became involved, and Louis D. Brandeis was hired by the magazine to represent it because it was accused of libel.