https://www2.illinois.gov/dnrhistoric/Preserve/Pages/Places.aspx
https://www2.illinois.gov/dnrhistoric/Preserve/Pages/taxfreeze.aspx
https://www.shermanbridge.com/blog/restoring-old-historic-property/
https://www.placeeconomics.com/wp-content/uploads/2020/01/City-Studies-WP-Online-Doc.pdf
https://www.theplanninglady.com/blog/preservationbenefits