"New York State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K638-6F2 : 7 September 2016), Manlius H Jeffers in household of Manlius Jeffers, Hadley, Saratoga, New York, United States; citing p. , line #6, family #1, county clerk offices, New York; FHL microfilm 559,001.
"New York State Census, 1875," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNV6-9V1 : 30 June 2016), Manlius Jeffers in household of Manlius Jeffers, Hadley, Saratoga, New York, United States; citing p. 23, line 7, State Library, Albany; FHL microfilm 559,006.
"New York, County Marriages, 1908-1935," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FFTH-2W4 : accessed 19 Oct 2012), Maulius H Jeffers in entry for Walter W Jeffers and Bertha L Kingsley, 1908.
"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MVSQ-H83 : accessed 19 Oct 2012), Manlius H Jeffers in household of Walter W Jeffers, , Saratoga, New York; citing enumeration district (ED) , sheet 4B, family 88, NARA microfilm publication T625, FHL microfilm 1821261.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4TG-ZS6 : accessed 24 January 2018), Manlius Jeffers in household of Walter W Jeffers, Hadley, Saratoga, New York, United States; citing enumeration district (ED) ED 17, sheet 3B, line 93, family 81, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1643; FHL microfilm 2,341,377.
"Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK1G-FQNS : 15 December 2015), Manlius Holden Jeffers, 1930; Burial, Lake Luzerne, Warren, New York, United States of America, Lake Luzerne Cemetery; citing record ID 147168174, Find a Grave, http://www.findagrave.com.