"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MPX6-3GC : accessed 27 Aug 2014), Harry R Carpenter in household of Riley R Carpenter, Sterling, Brookings, South Dakota, United States; citing enumeration district (ED) 47, sheet 3A, family 5, NARA microfilm publication T624, FHL microfilm 1375489.