"Illinois, Cook County Deaths, 1871-1998," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2M8-VXHT : 18 March 2018), Frank Zeller, 08 Dec 1945; citing Chicago, Cook, Illinois, United States, source reference , record number , Cook County Courthouse, Chicago; FHL microfilm .
"Illinois, Archdiocese of Chicago, Cemetery Records, 1864-1989", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:Q2HN-NTJH : Tue Aug 01 02:55:25 UTC 2023), Entry for Frank Zeller, 11 Dec 1945.
Find a Grave, database and images (https://www.findagrave.com/memorial/208374388/frank-joseph-zeller: accessed 15 August 2023), memorial page for Frank Joseph Zeller (22 Jul 1865–8 Dec 1945), Find A Grave: Memorial #208374388, citing All Saints Catholic Cemetery and Mausoleum, Des Plaines, Cook County, Illinois, USA; Maintained by grave×digger (contributor 47421469).
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