Libby Adler Mages, a theatre producer who won a Tony Award for her work on the Broadway production of Thoroughly Modern Millie, died July 2 at the age of 93 following a heart attack. Her death was confirmed to the Chicago Sun-Times by her daughter, Mari Stuart.

Ms. Mages’ additional titles on Broadway included the Tony-nominated productions of Swing!, Enchanted April, and Say Goodnight Gracie. She also produced the short-lived Do Black Patent Leather Shoes Really Reflect Up? (her Broadway debut, in 1982), The Twilight of the Golds, The Rise and Fall of Little Voice, and—most recently—The Bridges of Madison County.

Her longtime collaborators and partners include Mick Leavitt, as well as her two daughters, Stuart and Mari Glick.

Prior to her Broadway producing debut, Ms. Mages served as the Associate Chairperson of the Speech and Performing Arts Department at Northeastern Illinois University, where she also retained a faculty position throughout her career.

Mages also contributed greatly to the Chicago theatre scene. As a founding member of Stratford Investors, she helped ensure several productions made it to the stage in the city. Among those was the Chicago premiere of Edward Albee’s Three Tall Women at the Apollo Theater in 1995—the year after it won the Pulitzer Prize.

She is survived by her two daughters, son-in-law Jeb Stuart, and her three grandchildren.