| Sources |
- [S1910] population schedule, Davis Township, (Lafayette County, Missouri, United States: Mary Heyenbrock household, 1880), 27 May 2007, micropublication T9, roll 698. (Reliability: 2).
- [S1911] population schedule, Davis Township, Concordia postoffice, (Lafayette County, Missouri, United States: William Heyenbrock household, 1870), 27 May 2007, micropublication M593, roll 786. (Reliability: 2).
- [S1912] population schedule, Davis Township, Lexington postoffice, (Lafayette County, Missouri, United States: William Heyenbrock household, 1860), 27 May 2007, micropublication M653, roll 628. (Reliability: 2).
- [S2015] Heyenbrock Family Bible, (New York, New York, United States: Amerisantischen Bibel-Gesellschaft, 1884), 02 Dec 2007 (Reliability: 3).
- [S2020] population schedule, Davis Township, (Lafayette County, Missouri, United States: J. Frederick Heyenbrock household, 1900), 02 Dec 2007, micropublication T623, roll 869. (Reliability: 2).
- [S1914] Kenneth Weant, The Generations Network, Lafayette County, Missouri Obituaries, 1891-1920 , (Fred Heyenbrock, 27 MAY 2007), 27 May 2007 (Reliability: 2).
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