Hello Alistair, Not sure if this helps, but, in the SSDI, there are 2 Edward Olejnik listings in the Chicago area.
1.birth 18 MAY 1918 death 25 FEB 1993 social security # 350-09-4318
2.birth 21 OCT 1918 death 23 DEC 2000 social security # 322-09-4468 There was an obituary in the Chicago Tribune on 12/24/2000 that lists a surviving wife as Ann Pecucci. (need to pay to view the entire text) Good luck! Megan from Chicago