"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MMLL-YD6 : accessed 28 October 2015), Alden B Butler, Rockland city Ward 6, Knox, Maine, United States; citing sheet 14A, family 349, NARA microfilm pub
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MF3R-2NY : accessed 28 October 2015), A Bradford Butler in household of Wm Butler, Rockland, Knox, Maine, United States; citing enumeration district 110
Year: 1900; Census Place: Rockland, Knox, Maine; Roll: 595; Page: 14A; Enumeration District: 0151; FHL microfilm: 1240595
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MMLL-YD6 : accessed 28 October 2015), Alden B Butler, Rockland city Ward 6, Knox, Maine, United States; citing sheet 14A, family 349, NARA microfilm pub
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MF3R-2NY : accessed 28 October 2015), A Bradford Butler in household of Wm Butler, Rockland, Knox, Maine, United States; citing enumeration district 110
Marital Status: Married; Relation to Head: Head
Year: 1900; Census Place: Rockland, Knox, Maine; Roll: 595; Page: 14A; Enumeration District: 0151; FHL microfilm: 1240595