These are on the edge of my woods, and in it. Just moved here, curious.

From what I can see, the leaves are 'odd pinnate' and opposite along the branch. It seems to be a type of Ash, there's only four listed in Minnesota.

http://luirig.altervista.org/f...

Of the four, Fraxinus pennsylvanica looks most likely but some of the leaves on your tree are unequally lobed at the base. Some are equal, so maybe this is something peculiar to this species.

I found a photo of leaves which look unequally lobed at the based, but your leaves look to be more serrated.

https://www.google.co.uk/searc...

The only other genus listed in the same family Oleracea in Mn is Syringa.

This site also suggests an Ash.

http://forestry.about.com/od/t...

I think Sambucus racemosa is more likely. The unruly weak branch structure is typical in a woodland setting. The sometimes tree-like shrub almost always has multiple stems from the base. Ash almost always does not. The fruit will be gone, but are in terminal clusters with sambucus, and may still be evident. Ash seeds (completely gone at this time) are born along the stem.
http://plants.usda.gov/java/la...

I agree with you Rick!

http://amc-nh.org/resources/gu...

THATS IT!! What a thrilling realization