↑ "New York, New York City Births, 1846-1909," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2714-6J3 : 11 February 2018), Johan Zinser, 18 Nov 1878; citing Manhattan, New York, New York, United States, reference cn 245955 New York Municipal Archives, New York; FHL microfilm 1,322,134.
↑ Strong, Richard P. “Hans Zinsser.” in Science, vol. 92, no. 2387, American Association for the Advancement of Science, 1940, pp. 276–79, Online at JSTOR: Obituary
↑ "New York State, Marriage Index, 1881-1967". New York State Department of Health; Albany, NY, USA; New York State Marriage Index. Ancestry Sharing Link (free access) Ancestry Record 61632 #5166623 ($). Ruby H Kunz marriage to Hans Zinsser on 29 Jun 1905 in Adams Cors., New York, USA.