Harrison Graham also known as "The Corpse Collector" was a strange man from Philadelphia who would amuse children by talking in a cookie monster voice and carrying around a cookie monster puppet.  As if that weren't strange enough, Graham was also responsible for the sex-stranglings of seven women whose rotted corpses were discovered in his Philadelphia apartment.  Graham once told someone, "When I did it, I always used my cookie monster".  One would think you could take from that that Graham used his cookie monster puppet on his hand while strangling the seven women, but when the person questioned Graham what he meant by that comment, he didn't reply. 

8x11 color pencil art from Graham of a skull. The piece is signed in full and dated by year (2012).