Anatifacts: President James Garfield's Vertebrae
- Summary of the shooting includes pictures of vertebrae that the bullet passed through and tells how Garfield died.
- http://nmhm.washingtondc.museum/explore/anatifacts/1_garfield.html

Click2Biography: Guiteau's Assassination of President Garfield
- Story of President Garfield's assassination including contemporary drawings and the execution of his assassin.
- http://www.click2biography.com/charles_guiteau/charles_guiteau_ch1.htm

The Plea of Insanity
- Essay by nineteenth-century writer Sarah Orne Jewett opposes Guiteau's insanity plea. Prefaced with a summary of the case and the issues raised.
- http://www.public.coe.edu/~theller/soj/una/plea.htm

Charles Guiteau Collection
- Includes a biographical profile of the man who shot the President.
- http://gulib.lausun.georgetown.edu/dept/speccoll/cl133.htm