"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4G9-C8J : accessed 27 April 2015), James John Jeffers, Wyoming Township, Kent, Michigan, United States; citing enumeration district (ED) 41-48A, sheet 4A, family 74, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 1776.