"Massachusetts Births and Christenings, 1639-1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FZ8K-DX4 : 10 February 2018), Asaph Spaulding, 20 May 1807; citing LEOMINSTER,WORCESTER,MASSACHUSETTS, ; FHL microfilm 0874029 IT 2.
"Massachusetts Marriages, 1695-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FCC4-CQS : 9 February 2018), Asaph Spaulding and Martha Chase, 22 Apr 1835; citing reference ; FHL microfilm 0874029 IT 2.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD94-9MC : 12 April 2016), Asaph Spaulding, Leominster, Worcester, Massachusetts, United States; citing family 57, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"Massachusetts State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQ4D-YQ8 : 11 March 2018), Aseph Spaulding, Leominster, Worcester, Massachusetts, United States; State Archives, Boston; FHL microfilm 953,963.
"Minnesota Territorial Census, 1857," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:3854-8T2 : 9 August 2017), Asaph Spaulding, ; citing line 13, NARA microfilm publication T1175 (Washington D.C.: Central Plains Region, National Archives, n.d.); FHL microfilm 944,284.
"Minnesota, County Deaths, 1850-2001," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPZB-X282 : 1 February 2019), Asoph Spaulding, Minnesota, United States; citing Death, multiple county courthouses, Minnesota.