"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MGMW-4Z7 : accessed 24 Oct 2013), Alko Julius, Rock, Lyon, Iowa, United States; citing sheet , family 49, NARA microfilm publication T624, FHL microfilm 1374419.
United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MS4Y-7MH : accessed 24 Oct 2013), Alka Julius, ED 78 Forreston township Forreston town, Ogle, Illinois, United States; citing sheet 16B, family 383, NARA microfilm publication T623, FHL microfilm 1240333.