"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MD2V-HBX : 13 November 2020), Saml. Anderson, Henry, Iowa, United States; citing enumeration district ED 97, sheet 354C, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,344.
"Texas Deaths, 1890-1976," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K3SK-1LK : 13 March 2018), Samuel Anderson in entry for Thomas P Anderson, 04 Aug 1955; citing certificate number 40120, State Registrar Office, Austin; FHL microfilm 2,114,444.
Ancestry.com (Resources may be behind paywall.):
Year: 1860; Census Place: New London, Henry, Iowa; Roll: M653_324; Page: 301; Family History Library Film: 803324
Year: 1867; Ancestry.com. Iowa, Select Marriages Index, 1758-1996 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2014. Samuel Anderson and Isabell R. Ferrel, 11 Apr 1867
Year: 1870; Census Place: New London, Henry, Iowa; Roll: M593_395; Page: 292B; Family History Library Film: 545894
Year: 1880; Census Place: New London, Henry, Iowa; Roll: 344; Page: 354C; Enumeration District: 097
Year: 1885 Ancestry.com. Iowa, State Census Collection, 1836-1925 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2007.
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