| Sources |
- [S1657217672] Ancestry.com, Ohio, U.S., Rutherford B. Hayes Presidential Center Obituary Index, 1810s-2016, (Ancestry.com Operations, Inc.), Rutherford B. Hayes Presidential Center; Spiegel Grove, Fremont, Ohio; Rutherford B. Hayes Presidential Center Ohio Obituary Index, 1830s to 2011.
- [S1640033476] Ancestry.com, 1940 United States Federal Census, (Ancestry.com Operations, Inc.), Year: 1940; Census Place: Columbus, Franklin, Ohio; Roll: m-t0627-03244; Page: 2A; Enumeration District: 93-125.
- [S1658290969] Ancestry.com, Ohio, U.S., Births and Christenings Index, 1774-1973, (Ancestry.com Operations, Inc.).
- [S1640034025] Ancestry.com, 1920 United States Federal Census, (Ancestry.com Operations, Inc.).
- [S1640034039] Ancestry.com, 1930 United States Federal Census, (Ancestry.com Operations Inc), Year: 1930; Census Place: Marysville, Union, Ohio; Page: 7B; Enumeration District: 0017; FHL microfilm: 2341620.
- [S1640033586] Ancestry.com, Newspapers.com Obituary Index, 1800s-current, (Ancestry.com Operations Inc), Marysville Journal-Tribune; Publication Date: 31 Jan 1985; Publication Place: Marysville, Ohio, USA; URL: https://www.newspapers.com/image/329441498/?article=5567e93e-57ce-4aa8-8fb8-7e421b46124a&focus=0.036404543,0.29496223,0.27147633,0.568564&xid=3355.
- [S1666780681] Newspapers.com - Marysville Journal-Tribune - 31 Jan 1985 - Page 2, (Marysville Journal-Tribune), Obituary for Elmer J. Schwartzkopf (Aged 88) 31 Jan 1985.
- [S1640045312] Ancestry.com, 1900 United States Federal Census, (Ancestry.com Operations Inc).
- [S1640045312] Ancestry.com, 1900 United States Federal Census, (Ancestry.com Operations Inc), Year: 1900; Census Place: Darby, Union, Ohio; Page: 11; Enumeration District: 0132; FHL microfilm: 1241328.
|