Montana
Choteau; regional, stone-milled whole-grain flours and berries, retail, wholesale, specialty: identity preserved flours
Missoula; bakery using organic, stone-milled flour, retail, wholesale, specialty: flour mill on-site
Fort Benton; organic, regional grains and flours, retail, wholesale, specialty: large distribution
Nebraska
Hastings; bakery using organic, heirloom, regional flours and natural leavening, retail, wholesale, specialty: flour mill on-site
Omaha; bakery using organic, regional, stone-milled flour, retail, wholesale, specialty: flour mill on-site
Marguette; organic, heirloom, regional grains and flours, retail, wholesale, kosher, specialty: longterm organic practices
North Dakota
contact Sadder-Wiser if you know of any
South Dakota
Newell; organic, heirloom, non-GMO, regional, stone-milled grains and flours, retail, wholesale, specialty: low-cost shipping in midwest
Wyoming
Cheyenne; organic whole grains, bulk, wholesale, specialty: wide distribution
Ralston; heirloom stone-milled grains and flours, on-farm, retail, wholesale, specialty: flour mill on-site