i would like to sell this tree the trunk is about 35 ft tall and about 6ft around it sits on the edge of a park that is empty

Hi Warren:

Your best bet is to reach out to your local WI-DNR forestry office for advice on the merchantability of this individual black walnut tree:

https://dnr.wi.gov/fal/

Best of luck!

Hey Warren

Was wondering whether you were able to sell your valuable black walnut trees yet. An alternative to the excellent idea suggested by Jay Hayek is to search on Google with these search strings: “who buys black walnut trees near me?” "buy my black walnut trees" "timber companies that buy black walnut trees"

A local search is best to reduce the transportation charge on the amount you hope to raise.

Best Regards Jake