The Crooked Key Podcast explores the Peace Garden State and finds some less than peaceful hauntings. 

Sources:
http://www.ghostsofamerica.com/5/North_Dakota_Medora_ghost_sightings.html
https://www.hauntedplaces.org/medora-nd/
https://www.panicd.com/chateau-de-mores.html
https://www.onlyinyourstate.com/north-dakota/rough-riders-hotel-nd/
https://en.wikipedia.org/wiki/Medora,_North_Dakota#:~:text=Medora%20was%20founded%20in%201883%20along%20the%20transcontinental,ship%20refrigerated%20meat%20to%20Chicago%20via%20the%20railroad.
https://www.hauntedjourneys.com/haunted-inns/1793-chateau-de-mores%20