"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGMY-SDV : accessed 11 May 2016), Frank Smith in household of Harvey E Smith, Sweetland, Muscatine, Iowa, United States; citing enumeration district (ED) ED 117, sheet 8B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,428.
"Iowa, Birth Records, 1921-1942," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:7ZW4-BG3Z : 19 February 2019), Frank Raymond Smith in entry for Marlene Ruth Smith, 30 Dec 1935; citing Birth, Cerro Gordo, Lara, Venezuela, State Historical Society of Iowa, Des Moines.