Sources

Wikipedia Hales Corners – https://en.wikipedia.org/wiki/Hales_Corners,_Wisconsin

Wikipedia Boerner Botanical Gardens - https://en.wikipedia.org/wiki/Boerner_Botanical_Gardens

Fox 6 - https://www.fox6now.com/news/hales-corners-man-admits-to-killing-mother-tells-police-she-was-affecting-his-life-so-he-took-her-out

JS Online - https://www.jsonline.com/story/news/crime/2016/03/22/man-with-mental-illness-history-charged-in-killing-of-mother/84928528/

Fox 6 - https://www.fox6now.com/news/life-in-prison-with-parole-eligibility-after-20-years-for-hales-corners-man-who-killed-his-own-mother