Would you go get free poplar?

If some of the rounds were 36 inch diameter, it is probably Tulip Poplar, which as several have noted is not related to aspens. Tulip Poplar, also called Yellow Poplar or Tulip tree, is one of the largest trees in the east, with really big ones reaching over 150 ft tall. In a lot of places most of the biggest trees are Tulip. I guess occasionally a Bigtooth Aspen could approach 3 ft diameter, but a round that big seems a lot more likely to be Tulip.

If it looks like this its Tulip Poplar. I just got these dropped off at my place. 30 in. diameter.

Yeah it's tulip poplar. I just got back form my second trip. I might go get more tomorrow. A friend of mine who burns alot of wood in a fire pit has a broken leg so now I am getting some for him.

Scott