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 10 consecutive life sentences.
 
9" x 12" cover and back board from an original pad of Strathmore tracing pad which belonged to Rader. He has drawn a seal on the front and hand signed, D.L.R.
The back has a handwritten message from Rader and is hand signed, D.R. Rader aka BTK. The Cansas (sic) Pisces.