Another what tree is this post?

I am going to say hickory

Hickory!!

Hickory. I have a-lot of these on my property. Great wood!

Eric, I am in North-Central Ohio, and I have never seen a Sumac that big. (My property is lined with Sumac.)

I have bunches sumac on the property that would be tough to cut down with my 16"saw. They can get very large. Darned overgrown weeds, but if you season the wood it burns just like anything else, and it's easy to split, better wood than poplar too. I spend a lot of time killing them darned things, and they will sprout up in the middle of the lawn. That is not Sumac though. It's definitely Hickory. Only 1 or 2 other woods better than hickory too, maybe Locust.

Butternut. Use a tree key to I.D.

Most of the rounds look like Hickory to me, also. Put it this way; when you lifted them were they HEAVY (Hickory) or kind of heavy (Walnut)? Hickory is dang heavy when fresh, and also sometimes smells like "manure" when split. Walnut has it's own distinct smell. You might find it helpful to get yourself a copy of "The National Audubon Society Field Guide To North American Trees"-it has wonderful pictures of bark, leaves, fruit etc. and has helped me out many times. Check Barnes & Noble, Waldenbooks, etc. Good luck!

I agree with Warren. After cutting and splitting a large sumac, a friend told me that it wasn't a good wood to burn so I stacked what I had and didn't cut anymore. I really like sumac for starting your fire and building a fast bed of coals. It's burns too fast to be your primary heat, but it sure is good for starting. It's also good to put in with your large rounds to keep them burning. I intend to cut a cord of it this year just for that purpose.

There were butternut trees at the house where I grew up, and that does look like them to me. Ask the owner if the nuts were covered in a green, very sticky skin (kind of like flypaper). They were always a PITA to clean up before mowing. They do look like walnuts when shelled, which is probobly why he thought it was a walnut tree.

Here is an online tree identification tool:

http://www.fw.vt.edu/dendro/forsite/key/page1.htm

and the section with Walnut / Butternut / Hickory:

http://www.fw.vt.edu/dendro/forsite/key/compound.htm