| Sources |
- [S5794] Obituary of Elizabeth F. Zingraf.
- [S5] Ancestry.com, U.S., Social Security Applications and Claims Index, 1936-2007.
- [S2327] Ancestry.com (Illinois Department of Public Health. Division of Vital Records), Cook County, Illinois, Birth Certificate Index, 1871-1922.
- [S5796] username Susan, Find A Grave memorial for Clara F. Osterberg Corlett, #183770085.
- [S2330] Ancestry.com (Illinois Department of Public Health), Cook County, Illinois Marriage Index, 1871-1920.
- [S6] U.S., Social Security Death Index.
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