Love the show but on the Monster Mash episode they were talking about the Crazy Horse Memorial in South Dakota. The monument is the work of the Ziolkowski family not just the work of one man. Korczak Ziolkowski started work on the monument at the behest of the Lakota people and the work is being completed by his children after his death in 1982. Ziolkowski had worked on Mount Rushmore as well. As a Cree Ojibwa woman of Canada I have visited the memorial on several occasions.