| Notes |
- "Deutschland, Preußen, Brandenburg und Posen, Kirchenbuchduplikate, 1794-1874," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:JQHZ-6YG : 4 April 2019), Maria Dorothea Rosentraeger in entry for Joachim Christoph Korn, 27 Oct 1839; citing Marriage, Langen, Langen, Ruppin, Brandenburg, Deutschland, p. , Brandenburgisches Landeshauptarchiv (Brandenburg State Archives), Potsdam; FHL microfilm 1,334,650.
- https://www.ancestry.com/imageviewer/collections/2116/images/4110172_00245
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