Kelsey

https://en.wikipedia.org/wiki/Gurdon_Light 

https://www.tripsavvy.com/gurdon-light-2211874 

https://encyclopediaofarkansas.net/entries/gurdon-light-1198/ 

https://www.atlasobscura.com/places/gurdon-light 

Images

Google Images

Alanna

https://www.popularmechanics.com/science/a35092347/betz-mystery-sphere-conspiracy-theory/?utm_source=google&utm_medium=cpc&utm_campaign=arb_ga_pop_md_pmx_ca_urlx_20292853641&gclid=CjwKCAjwnOipBhBQEiwACyGLuhAYj7b0qn7lqSljHS2-XP6y_k8Z8hk9P5rencoYl2ivdt9tm1mlVxoCKNEQAvD_BwE

https://medium.com/@ParanormalActivityBlog/the-mysterious-sphere-betz-f021319e3186

https://en.wikipedia.org/wiki/Betz_mystery_sphere

https://en.wikipedia.org/wiki/Stone_spheres_of_Costa_Rica

https://www.thejaxsonmag.com/article/the-mysterious-betz-sphere-of-fort-george-island/

https://www.forbes.com/sites/shaenamontanari/2016/04/18/that-massive-stone-sphere-in-bosnia-is-probably-not-from-a-lost-civilization/?sh=3cf7b086174e

https://www.youtube.com/watch?v=5wVRjjrvQsM