| Sources | [S497]  Henrietta  Novy, Severin Families 1776 - 2000, (N.p.: Henrietta Severin Novy, 2000.), Tab: John Zitko and Mary Severin. (Reliability: 2). 
 
[S54]  "Find A Grave, Inc.," database,  Find A Grave  , (http://findagrave.com, 2007), 24 Jan 2024, Josephine K. Zitko, 248302689 (Reliability: 3). 
 
[S534]  FamilySearch, "Illinois Birth Certificates, Cook County, 1871-1949," database, The Church of Jesus Christ of Latter-day Saints,  FamilySearch.org  , ((http://familysearch.org : 14 November 2023)), accessed 1 Feb 2024), Julius John Zitko 1930 Birth; Citing County Clerk, Cook County Courthouse, Chicago: Entry for Julius John Zitko and Julius John Zitko, 3 Jun 1930. (Reliability: 4). 
 
[S523]  "World War II Draft Registration Cards, 1940-1947." Database and images., ( Ancestry . Ancestry.com : 15 Mar 2023.), (Ancestry.com : accessed 24 Jan 2024), Julius J. Zitko, serial no. 764, order no. 11297, Draft Board Cicero City Board No. 2, 5015 W. 22nd Cermak Rd., Cicero, ILL; citing World War II Selective Service System Draft Registration Cards, 1940-1947. (Reliability: 3). 
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