"Michigan Births, 1867-1902," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQJS-M8M : accessed 6 November 2015), Flora Prosser in entry for Harry Prosser, 14 Jul 1876; citing item 3 p 192 rn 162, Ferry, Oceana, Michigan, Department of Vital Records, Lansing; FHL microfilm 2,320,449.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MW3W-7NC : accessed 6 November 2015), Nettie B Prosser in household of Adelbert Prosser, Ferry, Oceana, Michigan, United States; citing enumeration district 217, sheet 573D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0599; FHL microfilm 1,254,599.
"Iowa, County Marriages, 1838-1934," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XJKR-L1D : accessed 6 November 2015), Harry E. Prosser and Alice B. Hogle, 14 Aug 1900; citing Marshall County, Iowa, United States, county courthouses, Iowa.
"United States World War I Draft Registration Cards, 1917-1918," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K6XJ-MVN : accessed 6 November 2015), Harry Elmus Prosser, 1917-1918; citing Oceana County, Michigan, United States, NARA microfilm publication M1509 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,682,681.