Dennis Lynn Rader is an American serial killer known as BTK, the BTK Strangler or the BTK Killer. Between 1974 and 1991, BTK killed ten people in Wichita and Park City, Kansas. Rader pleaded guilty and was sentenced to to 10 consecutive life sentences.

Reminisce August/September 2010 magazine.
He has torn off the address portion on the front of the magazine which he intiialed and inserted inside between the cover and front page. 
Hand signed on the inside cover, DLR.