"New York, New York City Births, 1846-1909," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:27Y4-CBN : 11 February 2018), John Obermayer, 07 Feb 1907; citing Manhattan, New York, New York, United States, reference 541 New York Municipal Archives, New York; FHL microfilm 1,984,280.