Oppenhiem is a Town in Fulton County. There is also a village or Hamlet in Oppenheim with the same name, near Crum Creek. This Hamlet is likely Oppenheim Center that has been mentioned. I also have family from Oppenheim. dating back to at least 1790's when it was part of Palatine in Montgomery County. I would certainly be interested in viewing the map you have. Are there any old plat maps of this area?
http://en.wikipedia.org/wiki/Oppenheim,_New_YorkThank You
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