https://github.com/davepinch/pinchy.cc/blob/master/content/questions/who-wields-the-most/who-are-the-most-powerful-people-in-the-world.md
In mid-March 1926, Burbank suffered a heart attack and became ill with gastrointestinal complications. He died on April 11, 1926, aged 77, and is buried near the greenhouse at the Luther Burbank Home and Gardens.