"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3B1-NFS : accessed 2 March 2021), Grace Peden in household of James H Peden, Nemaha Precinct, Richardson, Nebraska, United States; citing enumeration district (ED) 148, sheet 5A, family 84, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,938.
"Nebraska Marriages, 1855-1995," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2Z2-B51J : 28 November 2018), Guy R Powell and Grace Peden, 20 Oct 1912; citing Marriage, Dawson, Richardson, Nebraska, United States, Nebraska State Historical Society, Lincoln; FHL microfilm 2,022,086.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V3JP-J4W : 11 January 2021), Grace Powell, Nov 1979; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).