Tree ID...Sassafras and what else

[billfred]

Pretty sure the first pic is sassafras.
Very furrowed bark, reddish orange under the bark, distinct smell.

2nd 2 pics not so sure. I thought it was oak, but what about the dark ring in the middle. This was from the top limbs of a huge tree taken by loggers.

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[BenTN]

+1 for sassafras

Second wood looks like poplar to me.

 

[CincyBurner]

+1 for Sassafras and Liriodendron

 

[billfred]

So what tells you it’s a Poplar?

 

[nrford]

Yellow Poplar

 

[CincyBurner]

Tulip-poplar bark looks similar to ash. The heartwood has variations of yellow-greens and mauves.
Liriodendron is alternate branching habit (ash is opposite). As others have posted in past threads ash will have a hollow pith.
If you go back to where it was felled look for its leaves - distinctive 4-lobed; and its seeds are distinctive too: http://dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID=54

Tulip-poplar is a light wood that splits easily, but not as cleanly & straight as ash, or hickory. It's not a great firewood (I wouldn't go down a hollow to fetch it).