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Organizational and Hospital History: Advocate Illinois Masonic Medical Center History

Discover digitized historical materials including books, pamphlets, photographs and other items from Advocate Aurora Health and its predecessor hospitals


Advocate Illinois Masonic Medical Center originally opened as the Chicago Union Hospital in 1897 and served Chicago's north side communities. In 1921, the Illinois Masonic Hospital Association purchased Chicago Union Hospital and renamed it Illinois Masonic Hospital. In 2000, the hospital became a member of Advocate Health Care and is known today as Advocate Illinois Masonic Medical Center.