Greetings Butch:
Black walnut stumpage is rebounding quite nicely. Rather than selling your standing timber directly to a logger, might I suggest you contact an independent consulting forester to assist you in marketing your timber to the highest prospective timber buyer.
To ascertain local log demand and sawlog/veneer prices in New York, might I also suggest you contact a local New York state forester or independent consulting forester:
http://www.dec.ny.gov/about/27790.html
http://www.dec.ny.gov/docs/lands_forests_pdf/coopforlist.pdf
Best of luck!