I doubt that northern pecans, big western shellbarks and hicans will have a long enough season to ripen.
"Northern Nut Growers Association Thirty-Fourth Annual Report 1943" by Various
Hickory, Big Shellbark, 142.
"Trees of the Northern United States" by Austin C. Apgar
The big shellbark, like the little shellbark, is a common forest tree in the Middle West and Middle Atlantic states.
"Trees Worth Knowing" by Julia Ellen Rogers