Marvin Heemayer sources

Tread (2019) dir. Paul Solet. United States: Zipper Bros Films, Sutter Road Picture Company.
https://web.archive.org/web/20160414094159/http://www.theconcreteproducer.com/Images/Terror%20in%20Granby_tcm77-1308172.pdf
https://suzukisthoughts.blogspot.com/2021/06/unreasonable-things-story-of-marvin.html
https://web.archive.org/web/20070220134042/http://umdstudents.com/viewtopic.php?t=6125
https://web.archive.org/web/20070311015838/http://www.spokesmanreview.com/tools/story_pf.asp?ID=9810
https://web.archive.org/web/20080222044045/http://www.thedenverchannel.com/news/3394824/detail.html
https://web.archive.org/web/20160405082644/https://www.highbeam.com/doc/1G1-129458602.html
https://www.cpr.org/show-segment/this-man-barely-escaped-killdozers-path-now-hes-written-a-book-about-marvin-heemeyer/
https://killdozerbook.com/
https://archive.org/details/heemeyer/3+tape+2+side+a.mp3
https://www.latimes.com./archives/la-xpm-2004-jul-25-tm-bulldozer30-story.html
https://www.snopes.com/news/2017/06/09/killdozer-day-marvin-heemeyer/
https://mountaintownnews.net/2018/02/17/patrick-brower-talks-killdozer-operator-no-hero/
https://www.civitas-stl.com/the-last-great-american-folk-hero/
https://thecinemaholic.com/cody-docheff/
https://www.9news.com/article/news/local/investigations/newly-released-audiotapes-detail-reasons-for-granby-bulldozer-rampage/73-344859448
https://www.denverpost.com/2019/06/03/granby-bulldozer-rampage-heemeyer-dispute/
https://www.9news.com/video/news/14-years-ago-man-drives-bulldozer-on-rampage-through-granby/73-8149389