"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3QW-31X : accessed 11 October 2015), Martin Vandermark, Salem Township, Luzerne, Pennsylvania, United States; citing sheet 5B, family 113, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,241,435.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG8Q-NF5 : accessed 11 October 2015), Martin Vandemark, Briar Creek, Columbia, Pennsylvania, United States; citing enumeration district (ED) 12, sheet 2A, family 35, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,375,347.
"Pennsylvania, County Marriages, 1885-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VF9V-G8D : accessed 11 October 2015), Martin E. Vandermark and Catharine C. G. Lutz, 03 Dec 1898; citing Marriage, Pennsylvania, county courthouses, Pennsylvania; FHL microfilm 955,821.
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