↑ Find A Grave, database and images (https://www.findagrave.com : accessed 28 January 2020), memorial page for Sylvester C. Morse (11 Nov 1846–26 Nov 1866), Find A Grave Memorial no. 144611496, citing Chester Village Cemetery, Chester, Rockingham County, New Hampshire, USA ; Maintained by Stan Arnold (contributor 48121400) .
See also:
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWZ2-S4M : 29 October 2019), Sylvester C Morse in household of Thos F Morse, Chester, Rockingham, New Hampshire, United States; citing family 530, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).