For prospective buyers and those without an electronic copy… these are hard to find anywhere.
I have a scan of my POH from N731PJ 1980 P210N Serial 523. Obviously it may not be applicable to any other aircraft in question. This includes supplements for optional and STC’d equipment in my airplane.
Should be useful for general reference. Not for use in flight planning or any regulated purpose.
Download it at: http://www.marksetcetera.com/N731PJ-P210N-POH.pdf.