Brenda Ann Spencer is an American mass murderer and the original school shooter who on January 29, 1979 at the age of 16 shot nine people at Cleveland Elementary school in San Diego, CA killing two and injuring seven others.

Two page typed letter hand signed at the close, Brenda.
Includes the prison stamped mailing envelope postmarked July 25, 2006 with Spencer's typed name and return address. 

Brenda Spencer Signed Letter with Envelope