American President: William McKinley
- Fact file and comprehensive biographical sketch based on PBS series. Also includes gallery and quotations.
- http://www.millercenter.virginia.edu/academic/americanpresident/mckinley

New Book of Knowledge: William McKinley
- An encyclopedic biography written for 3-8 grade students. Includes fact file and inaugural addresses.
- http://ap.grolier.com/article?assetid=a2018710-h

Encyclopedia Americana: William McKinley
- Detailed biography written for older students. Includes inaugural addresses and fact file.
- http://ap.grolier.com/article?assetid=0264920-00

POTUS -- William McKinley
- Includes portrait, biographical facts, cabinet details, and related links.
- http://www.ipl.org/div/potus/wmckinley.html

McKinley Memorial Library and Museum
- Memorial, library, and museum honor McKinley's Niles, Ohio, birthplace. Includes photographs and tourist information.
- http://www.mckinley.lib.oh.us/

William McKinley: Second Inaugural Address. U.S. Inaugural Addresses. 1989
- Complete text of speech delivered Monday, March 4, 1901. Includes background information.
- http://www.bartleby.com/124/pres41.html

William McKinley: First Inaugural Address
- Complete text of speech delivered Thursday, March 4, 1897. Includes background information.
- http://www.bartleby.com/124/pres40.html

William McKinley
- Short biography from the official White House site.
- http://www.whitehouse.gov/history/presidents/wm25.html