"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDJL-226 : 12 April 2016), Frank Lamb in household of Elijah Lamb, Iowa, United States; citing p. 26, family 224, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,878.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD2X-NQN : 14 August 2017), Frank Lamb in entry for Elijah B Lamb, 1880; citing enumeration district ED 225, sheet 362C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 0341; FHL microfilm 1,254,341.
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