"Genealogy of The Claflin Family; being a record of Robert Mackclothlan of Wenham, Massachusetts and of his descendants 1661-1898" by Charles Henry Wight, member of the Long Island Historical society. 1903 William Green Press, New York. Page 201.
"United States Census, 1850," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MD9F-Q1Z : accessed 13 Apr 2014), Mason Martin in household of Jonathan Martin, Attleborough, Bristol, Massachusetts, United States; citing family 272, NARA microfilm publication M432.
"Massachusetts, State Census, 1855," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MQ4L-DVW : accessed 13 Apr 2014), Mason Martin in household of Jonathan Martin, Attleborough, Bristol, Massachusetts, United States; citing State Archives, Boston; FHL microfilm 000953975.
"United States Census, 1860," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MZHH-6N7 : accessed 13 Apr 2014), Mason Martin in household of Jonathan Martin, Attleborough, Bristol, Massachusetts, United States; citing "1860 U.S. Federal Census - Population," Fold3.com; p. 15, household ID 142, NARA microfilm publication M653; FHL microfilm 803491.
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