"United States Census, 1870," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MD32-3NN : accessed 11 December 2014), Wm Kwinkelenberg, Massachusetts, United States; citing p. 320, family 2716, NARA microfilm publication M593, National Archives and Records Administration, Washington D.C.; FHL microfilm 552,141.