Juan Vallejo Corona aka "The Machete Murderer" was California’s most prolific serial killer and held the record for the most murder convictions until the arrest and trial of Chicago serial killer John Wayne Gacy. Corona was convicted of killing 25 migrant workers although the number is believed to be much higher. He buried the victims remains in orchards around Yuba City, CA. Corona still holds the record for the most murder convictions in the state of California. Corona died of natural causes on March 4, 2019.

8 1/4" x 11" press photograph dated May 31, 1971, Yuba City, CA.  TWIN GRAVES - Newsmen look at twin graves in thickets on the banks of the Feather River north of Yuba City in the area where the bodies of 23 mass slaying victims have been found recently. Sutter County Sheriff Roy Whiteaker allowed a group of newsmen to tour the burial sites to get a better understanding of the story.