https://softschools.com/facts/national_parks/badlands_national_park_facts/2861/

https://www.travelsouthdakota.com/trip-ideas/story/14-surprising-facts-about-south-dakotas-black-hills-and-badlands

https://parkjunkie.com/parks/badlands/facts/

https://outdoors.com/things-you-didnt-know-badlands-national-park/

Stronghold District: https://www.nps.gov/articles/000/aerial-gunnery-range.htm

https://www.nationalparked.com/badlands

https://www.thegreatestroadtrip.com/badlands-national-park

The Ghost Dance: https://parkjunkie.com/parks/badlands/facts/

Buffalo War: https://www.pbs.org/buffalowar/buffalo.html

Pig Dig: https://npshistory.com/publications/badl/brochures/pig-dig.pdf

Sue: https://www.britannica.com/topic/Sue

https://npshistory.com/publications/badl/index.htm

https://morethanjustparks.com/badlands-national-park-facts/