| Sources |
- [S10080] Ancestry.com, Maine, U.S., Death Records, 1761-1922, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2010;).
- [S10457] Find a Grave (Killed in Action - Civil War), MASON William T - Union Army - 1821-1862 (Veteran) (KILLED IN ACTION).
https://www.findagrave.com/memorial/91085246/william_t-mason/flower
- [S10252] Ancestry.com, Maine, U.S., Veterans Cemetery Records, 1676-1918, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2020;), State Archives; Augusta, Maine; Maine, Veterans Cemetery Records, 1676-1918.
https://familysearch.org/ark:/61903/1:1:KXQZ-C87
- [S156] Historical Data Systems, comp, U.S., Civil War Soldier Records and Profiles, 1861-1865, (Name: Ancestry.com Operations Inc; Location: Provo, UT ; Date: 2009;), Historical Data Systems, Inc.; Duxbury, MA 02331; American Civil War Research Database.
- [S916] Ancestry.com, U.S., Adjutant General Military Records, 1631-1976, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT ; Date: 2011;), California State Library; Sacramento; Annual Report of the Adjutant General of the State of Maine.
|