Herbert William Mullin was an American serial killer born on April 18, 1947 who operated in Santa Cruz, CA. 
Mullin was serving life in prison for 13 murders which he says he committed to prevent further natural disasters.  Mullin died of natural causes on August 18, 2022.

color drawing on the back of a portion of one of Mullin's oatmeal boxes. 
Hand signed twice. Hand signed on the front, Mullin.
On the back Mullin has hand signed, Herbert Willliam Mullin 12/28/2004 Tuesday -