Courtesy Michael John Muuss, U.S. Army, 1985

Courtesy Berlin Senate

Courtesy U.S. Defense Threat Reduction Agency

Courtesy USDA Agricultural Research Service, K8645-17

Courtesy University of Nebraska Institute of Agriculture and Natural Resources

Courtesy History Nebraska, RG2608-1265

Courtesy Nebraska State Historical Society, RG1668-S159-05

From the 2008 NET Television program, Beef State

Courtesy of Keri Hicks, Douglas Bamforth and the University of Nebraska State Museum

Courtesy Nebraska State Historical Society, RG2608-000000-001048-0

Bisonte Magdaleniense polícromo -- wikipedia images

John C. H. Grabill [Public domain], via Wikimedia Commons

Courtesy of Keri Hicks, Douglas Bamforth and the University of Nebraska State Museum

By Louis Roesch Co., Lith. And Print., S.F. (Photographer) [Public domain], via Wikimedia Commons

Reprinted From US Army Hughes' Doniphan Expedition in The history of the military occupation of the territory of New Mexico by Twitchell Ralph Emerson (1859-1925) published on 1909

Alfred Jacob Miller [Public domain or Public domain], via Wikimedia Commons

Courtesy History Nebraska, RG2608-1265

Courtesy Library of Congress, LC-USZC2-6258, 3a12717u

Courtesy Northern Illinois University Libraries