Editing Mundelein, Illinois (section)

=== Post-incorporation ===

==== 1909 to 1925 ====
The village was renamed from Rockefeller to "Area" in July 1909. The name came from a sales technique school located in the village called Sheldon School, which had the motto of "Ability, Reliability, Endurance, and Action".<ref name=":1" /> In 1909, Sheldon purchased {{convert|600|acre|km2}} of land for the construction of the school.<ref name=":3" /><ref name=":4" /> His property contained a lake named Mud Lake, which was dammed and renamed Lake Eara.<ref name=":8" /> Sheldon had previously opened another business school in Chicago in 1902. Classes first began at the school in 1910, with students from [[Nicaragua]], [[Australia]], [[Mexico]], and [[German Empire|Germany]].<ref name=":4">{{Cite book |last=Halset |first=John J. |title=A History of Lake County Illinois |publisher=Higginson Book Company |year=1912 |pages=261, 585 |language=en}}</ref> At the school's peak, the school had over 10,000 students.<ref name=":3" /> Sheldon's business failed, with the ''[[Encyclopedia of Chicago|Electronic Encyclopedia of Chicago]]'' suggesting that the failure was a result of [[World War I]].<ref name=":2" /> Sheldon later sold his estate, which was purchased by the [[Roman Catholic Archdiocese of Chicago|Archbishop of Chicago]] [[George Mundelein]] to open [[University of Saint Mary of the Lake]] in 1921.<ref name=":03">{{Cite web |last= |first= |date=2021-10-22 |title=Mundelein Seminary in Illinois marks 100 years of forming priests |url=https://www.catholicsun.org/2021/10/22/mundelein-seminary-in-illinois-marks-100-years-of-forming-priests/ |access-date=2022-04-12 |website=The Catholic Sun |language=en-US}}</ref>

On December 10, 1924, the Village Board held a special meeting with representatives from the [[Soo Line Railroad]], who requested that the board change the village's name to Mundelein (for the cardinal). The board voted to make the change and asked the Illinois Secretary of State to make the name change. They received permission in April 1925, and the Village Board passed an ordinance changing the village's name to Mundelein.<ref name=":5" /> 
[[File:Mundelein_1926_USML.png|thumb|[[28th International Eucharistic Congress]] on June 24, 1926]]

==== 28th International Eucharistic Congress ====
{{Main|28th International Eucharistic Congress}}The closing events for the 28th International Eucharistic Congress were held in the University of Saint Mary of the Lake on June 24, 1926. Approximately half a million people came to the campus, including 10,000 nuns, 8,000 priests, 390 bishops, 64 archbishops, and 12 cardinals. Trains were used to commute people to the village every 30 minutes before mass.<ref>Killackey, p. 44</ref> A temporary terminal was built to accommodate the events at the current site of [[Carmel High School (Mundelein, Illinois)|Carmel High School]], which existed until the [[Great Depression]].<ref name=":5">{{Cite book |last=Carlson |first=Norman |title=A Transportation Miracle: XXVIII International Eucharistic Congress Chicago June 20{{endash}}24, 1926 |publisher=Shore Line Interurban Historical Society |year=2016}}</ref> 18,000 cars went through Mundelein on that day, and thousands of National Guard troops were sent to control traffic after the event. In total, 820 trains went through the Mundelein station from dawn to midnight on that day.<ref name=":8">{{Cite book |last=Kahover |first=Gail |url=https://books.google.com/books?id=HisTBAAAQBAJ&q=mundelein+seminary |title=Mundelein Seminary |date=2014-07-28 |publisher=Arcadia Publishing |isbn=978-1-4396-4645-8 |language=en}}</ref>

Two events were scheduled for the Seminary, a [[Pontifical High Mass|Solemn Pontifical Mass]] at 10:00 am, and a [[Procession]] at 2:00 pm. During the procession, a violent thunderstorm passed the seminary, leaving people at the procession "tired and soaked to the skin". The seminary was left with litter and damaged lawns after the event.<ref name=":5" />

==== 1929 to present ====
Floods in 1936 and 1937 severely damaged the village. The first flood occurred on September 27, 1936, after 1.33 inches of rain fell onto the village, damaging businesses. The second occurred in June 1937, flooding the village's main road and causing further damage to adjacent neighborhoods and businesses.<ref>Killackey, p. 48</ref>

By the 1970s, the community was largely residential with a little light industrial development.<ref>Encyclopædia Britannica Vol. VII, p. 100</ref> [[Ranch]]es and [[Split-level home|tri-level]] houses were built in the 1950s and 1960s in the center of town, with larger, two-story houses in the village's periphery built from the 1970s.<ref name="Mann">{{Cite web |last=Mann |first=Leslie |date=2011-06-10 |title=Mundelein vibrant and affordable |url=https://www.chicagotribune.com/2011/06/10/mundelein-vibrant-and-affordable-2/ |access-date=2024-06-25 |website=Chicago Tribune |language=en-US}}</ref>

A major employer of the village, Ball Glass, closed in the early 1980s. The village saw economic and industrial growth during the 1990s, gaining over 10,000 residents between the [[1980 United States census|1980]] and [[2000 United States census|1990 United States census]].<ref name=":9">{{Cite web |last=Ferlaino |first=Jessica |date=2016-09-02 |title=Rebranded and Redefined |url=https://businessinfocusmagazine.com/2016/09/rebranded-and-redefined/ |access-date=2024-06-21 |website=Business In Focus Magazine |language=en-US}}</ref>

Mundelein greatly expanded in size in 2022 with the annexation of over 700 acres of land owned by the [[Wirtz Corporation|Wirtz family]]; the owners of the [[Chicago Blackhawks]]. The plan was to develop 1,200 houses and 600 townhomes following the annexation.<ref>{{Cite web |last=Good |first=Gavin |date=2022-12-13 |title=Mundelein to annex 700 acres for Wirtz family's massive Ivanhoe Village project; 'It will … be one of the largest developments in Lake County' |url=https://www.chicagotribune.com/2022/12/13/mundelein-to-annex-700-acres-for-wirtz-familys-massive-ivanhoe-village-project-it-will-be-one-of-the-largest-developments-in-lake-county/ |access-date=2024-06-20 |website=Chicago Tribune |language=en-US}}</ref>