"New York Births and Christenings, 1640-1962", database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FDTQ-RSH : 18 January 2020), William A. Newton in entry for Dorothy Doane Newton, 1891.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M5HH-D5G : accessed 17 April 2021), William A Newton, Bronx Assembly District 35, New York, New York, United States
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4GJ-3SB : accessed 17 April 2021), William A Newton, White Plains, Westchester, New York, United States
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KQPG-R2N : 27 May 2020), William Newton in household of Dorothy D Newton, Ward 5, White Plains, White Plains City, Westchester, New York, United States
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