Morning Kevin-
Happy Independence Day...

Here's some info from the Illinois Death Index. Might be helpful in obtaining death certificates if you're so inclined:

Anna Raap
d. 11/13/41
POD: Chicago, Cook, Illinois
Age at Death: 70 yrs
Death Certificate # 0030694

Anna Schluter
d. 2/2/48
POD: Chicago
Cert.# 0003572

Casper Schlueter
d. 4/8/05
POD: Chicago
Age at Death: 72 yrs
Cert.# 00016809

Eva Schluter
d. 1/7/16
POD: Chicago
Cert.# 6000850

Hope this helps.
Good Luck in your search.
Paul