https://www.ghosttowns.com/states/nd/sims.html
https://www.express.co.uk/news/weird/560319/Grey-Lady-ghost-captured-schoolgirls-Hampton-Court
https://www.hrp.org.uk/hampton-court-palace/history-and-stories/historic-hauntings-at-hampton-court-palace/#gs.fmy6d4
https://libertyhall.org/learn/liberty-hall-family
https://witchesandfolklore.wordpress.com/2016/07/13/the-grey-lady-a-staple-of-british-hauntings/
https://www.hauntedrooms.co.uk/gainsborough-old-hall-gainsborough-lincolnshire
https://web.archive.org/web/20080705124333/http://www.prairiechurches.org/sims.cfm
https://libertyhall.org/learn/gray-lady-ghost
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