Dennis Lynn Rader is an American serial killer known as Wichita Kansas' "Bind Torture Kill" aka "BTK" who was convicted of 10 murders which occurred between 1974 and 1991. 

8 1/2" x 11" four page handwritten letter hand dated February 22, 2012 and hand signed on the top first page, Dennis L. Rader.
Hand signed again at the close, Dennis.

Includes the original prison stamped mailing envelope postmarked February 24, 2012 which is written completely by BTK and hand signed, Dennis L. Rader.
 
Includes a page Rader included from his newspaper on which he has written a message at the top to the recipient.