1850 U.S. census, Niagara County, New York, population schedule, Cambria, [no penned no.], p. 606 (stamped, recto), p. 303b, dwelling 354, family 359, John Peterson household; digital images, Ancestry.com (http://www.ancestry.com : downloaded 23 October 2014); citing NARA microfilm publication M432, roll 561.