- web.archive.org web/20180502141444/https://www.…
- detroit.curbed.com 2016/5/11/11655968/dan-gilbert…
- desmoinesregister.com story/news/local/grinnell/…
- thedp.com article/2022/09/penn-mcdonalds-…
- kpl.gov local-history/kalamazoo-history/buildings…
- meetgrinnellucc.org staff/