The 20th President of the United States, James Garfield, discovered his own proof of the Pythagorean Theorem. This document gives some brief interesting information about James Garfield and outlines his proof of the theorem. This is a handout which has prompts for each step of the proof and space for the student to fill in some parts of the proof. (The proof is very simple and accessible by any geometry or algebra student.) A key is provided.