"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHHW-PKW : accessed 25 August 2015), Fred O Littlejohn in household of John J Littlejohn, Michigan, United States; citing p. 6, family 48, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,159.
"Michigan State Census, 1894," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHKW-T5W : accessed 25 August 2015), Fred Littlejohn in household of John Littlejohn, Comstock, Kalamazoo, Michigan, United States; citing p. 317, State Archives, Lansing; FHL microfilm 915,315.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M91D-4C7 : accessed 25 August 2015), Fred N Littlejohn in household of Emma Littlejohn, Allegan village, Allegan, Michigan, United States; citing sheet 13A, family 346, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,698.
"Michigan Marriages, 1822-1995," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FCBZ-4RW : accessed 25 August 2015), Fred N. Littlejohn and May A. Damerell, 05 Sep 1903; citing reference ; FHL microfilm 2,342,664.
"Michigan Deaths and Burials, 1800-1995," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FHQV-W3J : accessed 25 August 2015), Fred N. Littlejohn, 07 Sep 1915; citing Allegan, Allegan, Michigan, reference v 4 p 45; FHL microfilm 2,110,083.