"United States Census, 1870," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MZ42-CBC : accessed 22 Nov 2012), Anna Mason in household of Thornton W Mason, West Virginia, United States; citing p. 22, family 132, NARA microfilm publication M593, FHL microfilm 553188.
"West Virginia Deaths, 1804-1999," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/F1PC-4VD : accessed 26 Dec 2013), Thorton Washington Mason in entry for Anne Mary Mason Grove, 10 Jul 1935.