[1] https://www.climbing.com/culture-climbing/nevada-professor-bill-ramsey/
[2] https://www.jonathansiegrist.com/p/bill-ramsey-status-professor-of.html?m=1
[1] https://publications.americanalpineclub.org/articles/13201212369/Bjrn-Eivind-rtun-19662012
[1] https://www.desnivel.com/alpinismo/alpinistas/ha-muerto-carlos-suarez/
[2] https://www.youtube.com/watch?v=uemGzzNEYGQ
[3] https://www.youtube.com/watch?v=Q8zO_Bi2IVI
[4] https://www.climbing.com/culture-climbing/carlos-suarez-the-alpinist-determined-to-live-an-authentic-life/
[1] Profile in On The Edge Issue 128 by Ian Parnell, 2003. Page 52
[2] Interview with Paul Twomey in On The Edge Issue 69, page 24. 1997.
[1] https://kaya-app.kayaclimb.com/user/CharlieUtah
[1] On The Edge 129, page 38
[2] Interview with Matt Heason, September 2007 https://web.archive.org/web/20071008171030/http://www.planetfear.com/article_detail.asp?a_id=1024