Juan V. Corona (c. 1934-). He is a Mexican-American serial killer who was convicted of the murders of 25 migrant farm workers found buried in shallow graves in fruit orchards along the Feather River in Sutter County, California in 1971. At the time, the crimes were characterized as among the most notorious in U. S. history. The exact victim total remains unknown and may be significantly higher, according to California authorities. His signature on a very well done pencil portrait. 5 3/4" x 9" in size, by prison artist Michael Gaxiola. The Corona signature is in ink, dated 2-13-99, with his prison number. The artist has signed "Michael" in pencil. Buyers in New York State must pay sales tax on both the sale price and the shipping charge with rates based on the county of residence so please wait for an invoice before payment.