Leona M. Schlaak, May 20, 1927 - April 17, 2025.
Leona M. Schlaak, 97, Michigan City, IN, passed away Thursday, April 17, 2025, at 1:35 am in Rittenhouse Senior Living of Michigan City, Michigan City, IN.
Funeral services will be held at 11:00 am, Tuesday, April 22, 2025, at Ott/Haverstock Funeral Chapel, 418 Washington St., Michigan City, IN, with  Pastor William Fine officiating. Private burial will take place in Greenwood Cemetery.  Visitation will be from 10:00 am to 11:00 am on Tuesday at the funeral chapel.
She was born May 20, 1927, in Michigan City, IN, to the late Rudolph and Laura (Dorsey) Heisman. On April 24, 1948, in Michigan City, IN, she married Roger Schlaak, who preceded her on August 14, 2019.
Also surviving are three daughters, Carol (Terry) Weiler of Michigan City, IN, Jan (John) Skierkowski of Lafayette, IN, and Elaine Criswell of Michigan City, IN; six grandchildren, Katy (Brad) Thompson, Erik (Erica) Weiler, Jenna (Kyle) Wargo, Jacob (Ashley) Skierkowski, Sara Criswell and Alex Criswell; seven great-grandchildren, Allison, Kegan, Tatum, Evelyn, Anna, Emelia and Amaya; former son-in-law, Barry Criswell of Michigan City, IN; and extended family, friends and pets.
She was also preceded in death by her sister, Norene Siegmund, and two brothers, Donald Heisman and Richard Heisman.
She retired after 21 years as a switchboard receptionist at Sprague Devices and also had worked at Al's Supermarket and Indiana Bell Telephone Service. Leona was a member of St. John's United Church of Christ and involved with the church choir and the ladies' guild. The family would like to acknowledge their sincere appreciation to the staff of Rittenhouse and Traditions Health Hospice, especially nurse Krista.
Contributions may be made to Traditions Health Hospice, 1229 Arrowhead
Ct., Crown Point, IN 46307 or to Michiana Humane Society, 722 Indiana
Highway 212, Michigan City, IN 46360.
To sign a guest book and leave condolences online, visit our website at
www.otthaverstock.com.