Robert Andrew Berdella deceased Missouri serial killer dubbed "The Kansas City Butcher" and "The Collector" who kidnapped, raped, tortured at murdered at least six men between 1984 and 1987.
White washcloth inside the original evidence bag in which it was collected.
Berdella would create gags for his victims by stuffing a washcloth into their mouth and then tying a bathrobe sash or cord around their head. In his police confession, Berdella explained that he believed victims Howell, Wallace, and Ferris died from a lack of oxygen resulting from their gag. Berdella explained regarding Howell, "either asphyxiated on vomit or the combination of the gag and the medicines were too strong for him to catch breath, or breathe."
All of the Bob Berdella items offered here were obtained directly from the estate of Del Dunmire.