1Suzon Yates, USA, Descendants of Jürgen Ordemann and Meta Grehl (Stand: Januar 2005).
2Asbury Park Press,Asbury Park,New Jersey,USA, 3 September 2009. Obituary Charles Henry Ordemann jr.
3Asbury Park Press,Asbury Park,New Jersey,USA, 12 Dezember 2008. Obituary Charles Henry Ordemann sr.