"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M33K-D49 : accessed 18 Nov 2012), Robert Curley, ED 93 Big Beaver Township, Lawrence, Pennsylvania, United States; citing sheet 7B, family 131, NARA microfilm publication T623, FHL microfilm 1241426.