"Deutschland, Heiraten 1558-1929," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/N671-M3D : accessed 14 Oct 2013), Maximilian Schumm in entry for Michael Schumm and Maria Anna Nagengast, 27 Feb 1865; citing [REFERENCE-ERROR]; FHL microfilm 901845.