Sources;

https://www.findagrave.com/memorial/93549200/mabel_marie-mcelroy

https://www.findagrave.com/memorial/93549020/anthony_wyatt-mcelroy

https://www.mentalfloss.com/article/574749/ken-mcelroy-murder-skidmore-missouri

https://www.myheritage.com/names/ken_mcelroy

https://vocal.media/geeks/ken-mc-elroy-s-wife-trina-mc-elroy-a-story-of-fear-survival-and-the-murder-that-shocked-a-town

https://nodawaycountymus.wixsite.com/mcelroy/timeline

https://simple.wikipedia.org/wiki/Ken_McElroy

https://www.findagrave.com/memorial/21971/ken_rex-mcelroy

https://www.findagrave.com/memorial/84375228/trena_louise-mcelroy_williams

https://mail.crimelibrary.org/notorious_murders/classics/ken_mcelroy/8.html

https://archive.org/details/inbroaddaylight00macl