From an article titled, “In Yellowstone, Migratory Bison Reawaken a Landscape“.

“Tens of millions of bison once roamed North America, grazing on grasslands, forests and plains, from the Great Basin of Nevada to the Atlantic Coast. It is difficult today to imagine the size of herds that are no longer seen; Lakota oral histories gauged herd size by the number of days it took them to pass.”

No mention of North Dakota State football.